Dr. Kenzo Tenma is a young Japanese brain surgeon, working at Eisler Memorial Hospital in Düsseldorf. Tenma is dissatisfied with the political bias of the hospital in treating patients, and seizes the chance to change things after a massacre brings fraternal twins Johan and Anna Liebert into the hospital. Johan has a gunshot wound to his head, and Anna mutters about killing; Tenma operates on Johan instead of the mayor, who arrived later. Johan is saved, but Mayor Roedecker dies; Tenma loses his social standing. Director Heinemann and the other doctors in Tenma's way are mysteriously murdered, and both children disappear from the hospital. The police suspect Tenma, but they have no evidence and can only question him.
