A robber escapes from prison with a single objective in mind: to track down his former cellmate, a serial killer who intends to pin his crimes on him. A cop is sent after the robber who, despite his best efforts, soon becomes Public Enemy Number One. As the protagonists are driven to their limits, it becomes increasingly unclear who is the hunter and who is the prey.

Pierre, a professional dancer, suffers from a serious heart disease. While he is waiting for a transplant which may (or may not) save his life, he has nothing better to do than look at the people around him, from the balcony of his Paris apartment.

The successful novelist Judith Ralitzer is interrogated in the police station about the disappearance of her ghost-writer. A serial-killer escapes from a prison in Paris. A missing school teacher leaves his wife and children. In the road, the annoying and stressed hairdresser Hughette is left in a gas station by her fiancé Paul while driving to the poor farm of her family in the country. A mysterious man offers a ride to her and she invites him to assume the identity of Paul during 24 hours to not disappoint her mother. Who might be the unknown man and what is real and what is fiction?