One night, Mady, a young student by day and locksmith by night, receives an emergency call from Claire to pick a lock. But the door the young woman wants to open is not hers, and the bag she escapes with is not hers either. It belongs to Yannick, a ruthless gangster who blames Mady and will stop at nothing to recover his stolen goods. Mady has only one night to prove her innocence and save her skin. What begins as a normal night shift turns into a brutal descent into violence.