Decades after the Fall of the Berlin Wall Singer Marco Hoffmann has reached the peak of his popularity. But suddenly the ex frontman of the DDR-Rock-Band "DIE KOSMONAUTEN" is accused by his former band member Volker Hinze to be that particular "IM Sänger" that ratted him out to the Stasi back then. The conspirational meeting of the past blood brothers turns into an argument about life and death.