Veronika dreams: walking toward large tree; upon waking its 05:55. Tomas takes Simon and Liv to school. Veronika consumes pills; drives to police station. Veronika and Klas attend domestic dispute between Tommy and Sara. Sara confirms accidentally hit head on cupboard. Tomas to Suzanne: Veronika's disinterested to himself and their children. Veronika admits to having nightmares. Simon describes his video game. Liv tries talking but Simon interrupts. Veronika explains to Simon about waiting his turn. Veronika dreams: Young Veronika sees clock: its 5:55. Liv joins Tomas and Simon, who are fishing. Veronika carries net towards them but sees Oskar under water, falls onto rock. At hospital, Tomas updates Ann about Veronika, who stays overnight. Veronika asks Liv to bring toiletries bag. She has more visions, wakes at usual time. Martin coaches Liv's team. When Tomas did not bring her bag, Veronika leaves hospital. At home, her pills are gone. Veronika claims she has to buy soap. Pharmacist says her pill prescription has expired. Veronika collects pills from work. Göran introduces new detective, Nassir. Tomas puts Simon to sleep, leaves Veronika on couch. Upon waking Veronika sees Oskar outside, he disappears. Inside, she discovers class photo, including Oskar.

Veronika dreams: large tree; Young Veronika sees Bengt. Veronika reads about Oskar's drowning; she had been on sick leave. At school, Simon urinates in hallway. He scuffles with teasing bully. Tomas instructs singing class, when he's called away. Klas describes how Oskar fell off bridge into river. Veronika and Tomas attend meeting with Simon's teachers. Teachers propose ADHD assessment for Simon. Tomas disagrees. Outside, Veronika believes Simon should be assessed. Martin coaches swimmers with Liv, Agnes and Jack. Veronika takes Simon to see Ninni. Tomas advises Simon to ignore bullies. Tomas to Susanne: he's always shouldering responsibilities; implies Simon's behaviour relates to Veronika's indifference. Tomas concerned of repetition of Veronika's breakdowns. Veronika and her dog discover corpse. Nassir notes careful burial: killer cared about victim. Veronika drops Liv at pool. Veronika sees Hanna inside, who disappears. Veronika asks doctor for more pills. Göran describes corpse: woman about 18, strangled, buried about four years ago. Nassir checks dental records. Love argues with Sofia, Veronika intercedes and alerts Nassir. Love describes Hanna's disappearance five years ago, at same time Oskar drowned. Veronika recognises Hanna's photo. Love says Hanna was afraid of Alex. Veronika has vision of Oskar held under water.

Tomas reminds Veronika of children's holiday, soon. Young Veronika sees Bengt as a miner. Hanna's corpse identified. Göran directs Nassir and Veronika to investigate. Nassir informs Hanna's parents. Her mother provides Hanna's goodbye letter and effects. Malin collects Simon for party; asks whether Tomas remembers Hanna. Veronika and Nassir meet Alexander with fiancée. Alexander denies relationship with Hanna. Veronika notices Hanna's butterfly necklace. Malin phones Tomas: there's been fighting, pick up Simon. Veronika to Katrin: denies knowledge of Oskar. Suzanne considers Veronika's dreams reflect unresolved issues. Veronika rejects Suzanne's hypnosis suggestion. Ann refuses to answer Veronika's queries about her child psychologist. Martin advises Liv: greater focus while swimming. Liv complains to Tomas that Veronika's behaving weird, again. Veronika researches Bengt's death, recognises his photo from her dreams. Ninni denies that Bengt accidentally died. Veronika visits Tomas as his class ends. Tomas's concerned about Liv's changing behaviour. Hanna's friends direct Nassir's attention to Love. Veronika's computer switches itself on, displays Josefin's file. Veronika sees Josefin's vision. Love reiterates that Alexander and Hanna had sex. Veronika's records show she was hospitalised when Oskar, Hanna and Josefin died. Veronika agrees to hypnosis: Young Veronika and Ann attend Bengt's funeral. Veronika sees Bengt's vision.

Veronika lies awake; sees Bengt as a miner. Veronika frightened by seeing Josefin in supermarket. Sofia places Josefin's printout on Veronika's desk. Veronika misses Tomas and Simon's meeting with Dan. Veronika raises Josefin's death with Nassir, it's discarded as significant due to Nicklas's conviction. Nassir displays Alexander and Hanna's sex video. Simon returns to class. Nassir interrogates Alexander with lawyer. Alexander lied because fiancée was present. He had sex with Hanna in cabin near corpse location but denies killing Hanna. Ice hockey coach claims Alexander was at game when Hanna disappeared, despite his not playing. Veronika notices that Nassir's superstitious. Liv leaves to stay-over with Molly. Veronika collects Simon from visiting with Ninni. Liv and Molly ride with motorcyclists to party with friends. They drink alcohol. Jack tries kissing Liv but she vomits and staggers away. Martin phones Veronika to collect Liv. Katrin senses that Veronika sees Oskar. Veronika returns Liv home. Tomas blames Martin's removing Liv from team for misbehaviour. Tommy denies treatments by child psychologist, but messages Sten's details. Woman reveals Tomas taught Hanna. Göran: no incriminating evidence at cabin. Veronika recalls Sten's consultations; he admits sedating her at Ann's behest. Veronika's vision: standing in blood.

Ann admits to medicating Veronika until she left home; claims medications stopped hallucinations, resulted in happy life with Tomas and children. Ann received payout from Ivar after Bengt's work accident. Veronika throws pills away. At home, she starts private investigation into Oskar, Hanna and Josefin's deaths. Julia and Anita doubt that Josefin knew Alexander. Veronika asks about Josefin's butterfly necklace, which Julia wears. Neither knows who gave it to Josefin. Martin returns Liv to team. Veronika takes sick leave. Nassir returns to Alexander's cabin; then checks ice hockey practice. When Veronika inquires, Niklas admits killing Josefin, who lied about her maturity. Nassir interviews Alexander's teammate Johan. Tomas prepares dinner; Ann bought Simon new shoes. Ann concerned about Veronika's health when delving into past issues. Tomas asks Veronika what she's up to. At night, Veronika sees Tomas smoking. Göran warns Veronika to follow Nassir's lead, not interviewing Anita. Johan confirms Alexander did not attend game. Alexander kept in overnight. When visiting Ninni, Veronika sees Martin with his father, Ivar. Tomas fills out Simon's ADHD parent assessment. Veronika and Katrin try contacting Oskar but she sees Young Veronika instead. Veronika's vision: Oskar leaves gumboot after observing man struggling with Hanna.

Veronika searches Hagmans' barn, takes Hanna's diary. Veronika reads that Hanna wants to use Alex as protection from "T". Sandra and Dan conclude Simon does not have ADHD but anxious about Veronika's safety. Veronika deduces that it was Tomas's assessment, which described Simon's anxieties. Julia recalls that Josefin contacted someone online. Tomas discovers Veronika's clandestine investigation. Nassir and Veronika interrogate Alexander. Alexander admits he had sex with Hanna, same day she disappeared. When Veronika asks, Alexander did not give Hanna any necklace. Nassir's annoyed by Veronika's questioning; sends her home. Katrin refuses to try contacting Oskar again. Göran tells Nassir about Veronika's previous breakdowns. Tomas queries Veronika about her investigation, she does not answer. She has further visions of Josefin. Veronika explains her visions to Tomas. Tomas humours her but calls hospital. Veronika drives away. When Josefin appears in her car, Veronika swerves and crashes into tree. Doctor calls Tomas to Veronika's hospital bedside. Tomas describes Veronika as confused before she left home. Ann agrees that Veronika's had delusions of seeing dead people, before. Tomas does not believe Veronika. Veronika requests Nassir to visit; she outlines her clandestine investigation, mentions Hanna's diary, Oskar's gumboot. Orderlies take Veronika to psychiatry ward.

Veronika dreams: Liv's near big tree. Upon waking, Veronika panics and is sedated. Nassir researches Oskar's drowning. Göran congratulates Nassir on Alexander's arrest. Tomas allows Nassir collect Veronika's investigation. Liv and Agnes prepare for swimming. Doctor informs Veronika she's been committed according to Swedish statutes [ sv]. Veronika argues she did not attempt suicide. Nassir confirms Hanna loved Alexander and was afraid of "T". He interviews Niklas; determines Niklas confessed to murder to gain notoriety. Veronika pretends to take pills; asks for Susanne. Nassir finds Oskar's gumboot in forest, near river. Susanne resumes Veronika's hypnosis. Veronika sees Young Veronika trying to stop Bengt from going to work. Nassir questions how Veronika knows Hanna and Oskar's details. Veronika was hospitalised, at that time, because she had frightening visions since childhood. Nassir has Veronika discharged. They need to discover whoever gave victims their necklaces and who is "T". Anita remembers Josefin in town choir. Veronika confronts Tomas about teaching both Hanna and Josefin. He repudiates her implication; orders her to leave. Veronika sleeps at Ninni's. Ann's afraid of Veronika; they argue over Veronika's foreknowledge of Bengt's death at 5:55. Veronika collects Liv at pool; Veronika sees Hanna's swim team photo. Tommy arrives to collect Agnes.

Veronika details her premonitions to Nassir. She dreams while with Ninni: Liv enters shower, when Veronika finishes brushing teeth, Liv's asleep in her bed. Mechanic Paul confirms that Tommy welded at stables, March 2019. Göran stops Nassir questioning Tommy as case's closed. Nassir tails Tommy into forest. Veronika sees Bengt at Hanna's funeral. She visits Ivar, observes Monica's photo: she wears butterfly necklace. Ivar recalls Bengt said Martin raped Monica. Monica committed suicide. Veronika has successive visions: Ivar killed Bengt; Martin watches Josefin singing, coaches Hanna, runs after Oskar. Veronika messages Nassir: "T" for trainer: Martin. Nassir drives towards town. Liv ignores Veronika's calls, leaves Molly, enters Martin's car. Tomas to Veronika: Liv at Molly's. Martin has Liv practice turns. She wears butterfly necklace. Katrin: Martin at pool; Molly: Liv at practice. Martin's grooming Liv. She runs away to hide; Martin stalks Liv. Veronika smashes pool door. Martin chokes Liv as Veronika approaches. She tries to talk him down, lunges at him. They fight, Martin starts drowning Veronika but Liv hits him with an extinguisher. Martin dies in pool. Veronika types report; Nassir: do not mention Josefin. Liv's recovering. Simon and Veronika talk with Ninni; they learn Ninni died previous evening.

Igor stitches man's eyebrow gash; room starts flooding. Frozen pipe has burst; Larouchi orders evacuation to Internal Medicine. Alyson and Hugo attempt to find room for ED patient influx. Igor and Olivier briskly attend patient, nearby Alyson. Olivier re-assigns Chloé, Alyson and Hugo to attend ED patients with Cohen's approval. Igor introduces interns to Fred and ED's priority system. Chloé attends her first patient in months: pierces thumbnail to relieve swelling. Olivier has Alyson assist inserting a tube into a woman's throat to relieve her respiratory distress. She is stabilised. Igor and Hugo are called-in from cafeteria. Chloé treats a kidney stone patient. Olivier advises Alyson to be more independent. When Alyson's patient has a low heart rate, Olivier wants them shifted to ICU but they are too full. Alyson brings in Chloé, who suggests blood thinner. Olivier and Alyson alternate CPR, while Fabrice administers medication. Hugo treats an exposed shinbone fracture. Igor takes over when Hugo becomes overwhelmed. Olivier acknowledges Hugo's good work on patients' casts. Numerous ambulances roll into hospital carpark, containing 40 carbon monoxide poisoning victims. Olivier orders all staff to immediately assemble in the carpark. Arben, driving an ambulance, hides from his former teammates.

Lazare informs Hugo of Arben's presence. Olivier emphasises all medics to correctly prioritise cases. Alyson works alongside Arben. She takes her patient Andrea, up to ward. Only three patients can access high pressure chamber at a time. Olivier's protocols determine which ones enter first. Andrea must wait for second batch. Arben has slight poisoning; he wears an oxygen mask. Olivier orders Hugo into chamber with first three patients. Arben becomes anxious upon return to Internal Medicine. Chloé and Olivier monitor various patients on oxygen. Muriel and Stéphanie control chamber's conditions. Hugo and patients are inside. Olivier justifies use of priority system despite Alyson's desperate plea on behalf of Andrea. Olivier advises Alyson to keep objective. Muriel returns to ICU duties. Hugo applies masks to patients; one patient's poorly sedated and starts fitting. Hugo has no syringes to sedate him. Stéphanie scrambles to find one. After the sedative, the patient calms but requires re-intubation. Chamber's de-pressurised, Muriel intubates patient before return to chamber. Alyson's worried by delay's affect on Andrea. Arben removes his mask and tubes but collapses. Olivier sternly orders Alyson to calm down. Alyson wheels Andrea into chamber, Igor exchanges with Hugo. Arben wakes in bed with Chloé monitoring him.

Chloé, Alyson and Hugo greet Arben, who he had a personal problem. Screening of carbon monoxide victims finishes. Olivier estimates ED remains with Internal Medicine for another week. Olivier and Muriel assign Hugo to triage with Fred. Hugo sorts files into priority categories. Arben's moved to recovery room. Neither Chloé nor Alyson know why Arben left. Alyson assists Igor with traffic accident patient. Igor holds patient's chest wound closed; Alyson cuts patient's chest to relieve lung pressure. Chloé sees Arben sitting beside homeless patients. Hugo's patient requires psychiatrist but none are available. Igor reorganises roster to reduce Alyson overworking. Hugo's patients become restless; Fred asks Hugo to speed up. Chloé diagnoses woman with flu. Chloé asks Hugo to transfer woman's baby, James, to pediatrics. Hugo hands James to Arben. Despite readings returning to normal Arben stays for James. Arben takes James back to Hugo; baby may have measles. Kim and Anna attend James. Alyson's enthusiastic to join ED but Olivier cautions her not to make hasty decisions. Patients squabble at reception. Arben informs Chloé of James's status; his mother has measles, too. A violent patient attacks Alyson and others. Arben chats with homeless man, Bernard. Arben discovers patient in Fred's isolation room.

Alyson crawls into room, discovers middle-aged woman Josiane. They call for Olivier, who stabilises her. Hugo remembers Josiane from the morning. Josiane's transferred to ICU. Olivier tries to find out more about Josiane from Hugo, Arben and Chloé. Arben collects supplies to treat Bernard. Olivier's displeased by staff's poor handling of patients' files. Martine finds Josiane's file. Muriel checks that Chloé's had no blackouts. Arben asks Chloé to assist with Bernard. Nathalie asks ED staff about Josiane. Olivier takes responsibility, Martine describes problems processing ED patients. Nathalie promises tmore staff, CCTVs and computers to address these problems. Hugo still takes too long per patient. Chloé returns with Bernard's results; Arben suggests antibiotics. Arben cautions Bernard that his necrotic toes will be removed. Alyson's patient has throat lump; at radiology Alyson tells Louise that Saïd sent her. Patient has infected inflammation and cellulitis. Louise books surgery for Alyson's patient. Doctor arrives for Bernard, concerned by Chloé's absence he asks Olivier to attend as Arben provides rundown of Bernard's symptoms and treatment. Olivier queries Arben, who explains he's paramedic for Order of Malta; no longer a doctor. Chloé confirms Bernard's antibiotics to Laura. Neuville queries Josiane's scan authorised by Igor.

Hugo takes phone to Olivier who attends wounded man. Neuville updates Olivier on Josiane's scan. Hugo informs Olivier that Igor's gone to surgery with a patient. Hugo finishes stitching another patient so Saïd can replace Olivier. Football coach wants his queasy players tested and treated prior to plane flight. Players start vomiting; Alyson and Chloé ask coach for their menus. Olivier requests Hugo collect Igor's files since ED shifted to Internal Medicine. Test results confirm that the players have food poisoning; their flight and game is cancelled. Olivier starts reviewing his patients' files with Igor. While Saïd supervises, Igor distributes his remaining active cases to Alyson or Chloé. Olivier explains to Hugo that Igor's memory lapses were probably due to poor sleep. Olivier asks Arben to join ED's night shift to replace Igor. Olivier learns his interns already worked with Arben. Arben monitors footballers. He tells Alyson to catch up on sleep. Chloé attends fight victim, Joachim, who has a lung infection. Arben has footballer, Yanis tested for muscle weakness against Olivier's instructions. Joachim kisses Chloé. Hugo push starts Igor's car. Nathalie tells Arben to go home but he refuses. Igor drives Hugo in his car in circles around carpark.

Hugo takes over when Igor asks for assistance with fitting patient Cyril. Igor has lost his confidence, become short-tempered. Hugo advises him to notify Olivier. Olivier and Saïd preview staff duties. Alyson discovers that Olivier's rabbit's missing. Hugo and Igor discuss Cyril's pain management with analgesics not working. Chloé suggests hypnotherapy or ICU drugs. Olivier asks Arben why he's treating Yanis for muscle weakness. Arben verifies his diagnosis and Yves determines its severity. Yves was concerned for Arben's unexplained abscence. Muriel advises restraints for Cyril as ICU drugs are for emergencies. Yanis's distraught due to Arben's diagnosis. Cyril's fitting prevents his scans. Josiane's stabilised with brain hemorrhage. Joachim found collapsed in corridor; he shuns Chloé discovering his urination. While examining Joachim, Arben notices crack cocaine signs. Chloé castigates herself for not realising. Arben advises Yanis hide his condition and maintain his career. Cyril fits and injures himself. Hugo brings Muriel to see Cyril; she prescribes sedatives. Alyson captures Olivier's rabbit. Hugo stitches Cyril's wounds. Alyson apprises Olivier of rabbit's injury. Chloé notices Joachim's fractures; he lied about epilepsy. Nathalie tells Arben he cannot practice medicine without qualifications. Alyson agrees to Olivier changing her internship to ED. Hugo observes Alyson and Lazare leave cafeteria.

Chloé attends woman, Ella, with lower back pain, bleeding urine. Chloé recommends further tests. Ella believes she's growing wings. Muriel directs Chloé to Human Resources for interview. Nathalie refuses to reinstate Arben with his fake document. Hugo attends Massan, Arabic speaking, chemical burns victim. Massan's foreman, as translator, claims his hand's wound caused by caustic soda. Arben has Chloé demonstrate treating wound on patient claiming dog bit him. Chloé: bite does not match dog's teeth. Hugo discovers Massan's wounds extend across his chest. Olivier recommends Arben assist Hugo. Arben cuts away Massan's shirt; obtains burns unit's advice. Alyson helps Arben. Igor's late for work. Alyson understands Massan's mumbling. Chloé enlightens Ella to her kidney infection; recommends psychiatrist for her wings. Lavare speaks to Massan, who's afraid of losing his job. Arben describes burns inconsistent with soda but foreman maintains his claim. Chloé refuses Human Resources' redeploying to administrative duties. Chloé advises Hugo to cover for Igor's absence. After Chloé explains, psychiatrist speaks with Ella. Hugo explains Igor's problems to Olivier. Massan has cardiac problems. Chloé confirms Massan's not soda burns. Foreman's left hospital. Alyson tells Hugo about switching internship to ED. Hugo finds Igor collapsed inside pressure chamber; starts CPR.

Chloé brings Massan to Fabrice in ICU; they are called to pressure chamber. Chloé takes command, issuing instructions to Fabrice and Nadi on CPR, while querying Hugo about Igor. They get Igor's heart started, he's moved to ward. Muriel directs Nadi to use defibrillator on Igor. Arben and Chloé suspect its attempted suicide. Lazare informs interns that Igor's heart's beating. Muriel sends them back to ED. Olivier calls ward staff meeting; he's closing ED to new admissions. Olivier asks Chloé's opinion about Igor; she believes Igor will be adversely affected. Alyson and Hugo return to residences to sleep. Chloé and Arben check computer search histories. Chloé tests Igor's reflexes and brain activity. Staff await news of Igor's condition. Chloé explains Igor's chloroquine overdose to Muriel. Hospital CEO outlines response to Igor's collapse. Chloé tells Alyson that Igor's likely to die. Arben informs Chloé he wants to practice medicine. Igor has died. Hugo reads Igor's suicide note on residence wall; he despairs of being good enough. COVID-19 pandemic Hugo works at GP clinic and hospital. Chloé's in ICU and Alyson in ED. Manuel returns to look after hospital's infected geriatrics. Arben's documentation is now up-to-date; he asks Olivier to help in ED.