Martin Harris acabou de sair de um coma de quatro dias, fruto de um acidente de carro em Berlim. Ao acordar, descobre que sua esposa não o reconhece e, para piorar, existe um outro homem usando sua identidade. Ignorado pelas autoridades e na mira de assassinos, sua única chance de desvendar este mistério é contar com Gina, uma motorista de táxi que poderá ajudá-lo a provar que ele não está louco.
On the 28th of October 1884 Daniel Paul Schreber, candidate of the National Liberal Party in Chemnitz, suffered a heavy defeat at the elections of the German Reichstag. He was taken up in the mental clinic of the Leipzig University soon afterwards. To his rehabilition he wrote an extensive piece of work, "Denkwürdigkeiten eines Nervenkranken" (Memoirs of My Nervous Illness), which was published in 1903 and led to his temporary dismissal. Hereby Schreber became the most quoted psychiatric patient in scientific literature. The third part was realized by Peter Tscherkassy based on a concept by Ernst Schmidt Jr.
