Mady, a student, works as a locksmith by night. He helps Claire get into her apartment and soon realizes that she lied to him about her identity and robbed something that belonged to a dangerous man, Yannick. Mady gets embroiled in a manhunt and will have one night to prove his innocence.

The story is carried by Mady, student by day, locksmith by night. But Claire, the enigmatic young woman she is helping out one night, isn’t what she seems to be. This door isn’t that of her apartment. And the bag she wants to recover at all costs isn’t hers, but Yannick’s, a man whose questions Mady will have to answer to. Caught in a hellish race, Mady only has one night to prove her innocence in a bustling city. One night to save her own skin.

Maxime lives with the ghost of his girlfriend Hélène. Wishing to put an end to this frankly unbearable situation, Maxime finally decides to break up with her. Hélène doesn't seem ready to accept this decision.