The obscure philosopher Georg Hermes almost withdrew from the world to concentrate on his studies, especially Heraclitus, having no relationship since his mother's death. When he wants a new suit for a lecture (actually very minor) about his new book, he meets the sisters Franziska, Breate and Marthe, who run a boutique, share a house and have a lover each. Those invite Georg to dinner, Franziska even on dates. Falling off a boat he gets naked with her, and they become lovers. The girls all take to Hermes and get him to move in, spoiled by all and offered polygamy.

Claude, a militant anarchist, is caught stealing and is shot by a policeman while fleeing the scene. Dodo, a hairdresser, is hit by one of the stray bullets. They meet in the realm of the dead and together they visit familiar places and their loved ones. By debating their past with each other, they become close and fall in love. Because of their feelings they get the chance to return to life for twelve hours in order to prove the depth love they share.