In his early thirties, Vincent works for the Meurthe-et-Moselle department and has just been dumped by his girlfriend Louise, who also happens to be his boss. Alban, 45, still lives with his mother and works in the same office as Vincent. After answering a cell phone left behind at the scene of a car accident, Vincent and Alban find themselves entangled in a dangerous criminal plot that turns their lives upside down.