Re:Monster: Season 1

Dr. Kenzo Tenma, head of Neurosurgery at the Eisler Memorial Hospital in Düsseldorf, carries out a successful neurosurgery on a famous opera singer, but the hospital Director Udo Heinmann takes the credit during a press conference. Later, Tenma is saddened when he discovers that an operation on a Turkish construction worker was given a lower priority and subsequently died. The construction worker's widow blames Tenma for his death. When out with his fiancee, Director Heinemann's daughter Eva, Te

Dr. Tenma is able to save Johan's life, but Roedecker dies during surgery under Dr. Boyer. Boyer and Oppenheim scold Tenma, stating that the doctors had to scramble to cover for him at the last minute resulting in Roedecker's death. Oppenheim forwards his report to the director. As a news report states that flowers were left at City Hall and a decision for a new mayor is taking place, Director Heinemann states in a press conference that Roedecker died of a cerebral infarction and that they did t

The police arrive at Tenma's apartment and inform him that Director Heinemann, Dr. Oppenheim, and Dr. Boyer were found dead. When Tenma returns to Eisler Memorial Hospital, he also learns that the Liebert twins have disappeared. Following Director Heinemann's funeral, Tenma is informed by Inspector Egon Weisbach and Inspector Heinrich Lunge of the BKA that the dead men were poisoned by candy containing a muscle relaxant and Lunge suspects the doctor may be involved. Tenma considers returning to

Inspector Lunge questions Junkers about his involvement in the homicides and he becomes hysterical when Lunge asks who hired him. Tenma convinces Junkers to overcome his fear and confess his involvement, however, that night, Junkers finds his police guard dead and flees. Soon after, Tenma also finds the dead guard, poisoned by candy in the same manner as the hospital officials from nine years ago. He follows Junkers into a nearby construction site, and finds him with Johan Liebert, whose life Te

Nina Fortner is a bright university student studying law at a university in Heidelberg. She is seeing a counselor regarding strange dreams and has no memories of her life before the age of 10. She begins receiving poetic emails from an unknown person and decides to meet them. One day in a lecture class, she is overcome by fear and nausea at the mention of a family massacre. Meanwhile, Tenma is investigating the serial murders of middle-aged, childless couples and is searching for information on

With the help of Maurer, a local newspaper journalist, Tenma is able to track down the Fortners on the day of the twins' 20th birthday. The Fortners refuse to talk about the missing twin boy, but reveal that Nina has left to meet the "mysterious stranger" at Heidelberg Castle. Tenma drives to the castle where he saves Nina from a hired thug and takes her back home, trying to explain that she is Anna Liebert. Meanwhile, the thug, tied up with Tenma's necktie, fearfully meets his employer.

Tenma and Nina return to find Fortners and Maurer dead. The scene brings Anna's memories flooding back and she says that she shot Johan. Two detectives arrive at the scene and escort Tenma and Nina away, however Tenma becomes suspicious of them and he escapes with Nina. Back in town, Tenma finds that the detectives are legitimate and the thug at the castle was found dead. Nina, now aware of her past, slips away from Tenma. Inspector Lunge examines the scene, and finds a necktie that he suspects

Tenma returns to work at the hospital in Düsseldorf. Meanwhile, Lunge questions Eva, now a three-time divorcée, about the necktie he found at the murder scene, but she denies ever seeing it. Eva then pleads with Tenma to take her back, but he refuses and Eva threatens to turn him over to Inspector Lunge as she gave the necktie to Tenma years earlier. With the police on his tail, Tenma is forced to flee and he recalls the events that have led to his current situation. Five months later, Tenma lea

Five months ago, Tenma began rigorous firearms training with a former army veteran named Hugo Bernhardt, who was also taking care of an angry orphaned girl whose mother he shot and killed in Myanmar. During his time there, Tenma creates a new bond between the girl and the veteran, and later when questioned by Inspector Lunge, Bernhardt refuses to disclose Tenma's location.

While investigating the murder of a prominent councilman and his wife at the Springer Estate in Verden, Tenma encounters the petty criminal Otto Heckel and escapes with him. Heckel suggests that they could make good money by operating on wounded criminals, but also reveals that he knows the councilman's killer. They visit the killer who is remorseful, duped by a man called Erich into committing the murders. But before Tenma can extract any more information, the killer commits suicide. In order t

While investigating in the former East Germany, Tenma discovers that Johan was adopted by the Lieberts from an orphanage called 511 Kinderheim which is now abandoned. He contacts Hartmann, a former district official with the Ministry, who explains that the orphanage was an extremely harsh environment for the children, ruled by fear and violence. There, Tenma also encounters a boy under Hartmann's care named Dieter. When Tenma discovers Dieter's body is covered with bruises, he confronts Hartmann

Tenma learns that the orphans in 511 Kinderheim were part of a project to produce perfect soldiers through psychological reconstruction. However, during a power struggle, the 50 instructors and orphans were killed. Hartmann takes Dieter back from the hospital, and when Tenma visits Hartmann's apartment he realizes that Hartmann was at 511 Kinderheim and is now trying to reshape Dieter to be similar to Johan. At the ruins of the orphanage, Hartmann explains to Tenma that the battle was triggered