Marie is a violent cello and very talented teenager in school. Victor is a friendly boy, dynamic, but who knows some academic difficulties. Ignoring that Mary is losing sight, Victor falls in love with her. And little by little, to his great surprise, Marie starts to help her ... When Marie reveals her secret, a pact is concluded between the two teenagers: Victor helps her to hide her condition so that she can pass The entrance examination to the conservatory. An unfailing friendship will emerge from this unlikely duo, ready to do anything to face the rest of the world.

Three childhood friends support each other through life's ups and downs in this comedy/drama. Each goes through a difficult time in their life, and is "helped" by the others - always well-intentioned, but not always with the intended results! Baptiste's (Kad Merad) wife leaves him and he becomes depressed then obsessive-compulsive. César (Pascal Elbé) has a secret affair with his boss's daughter - he's nervous about seeing her in case dad finds out, but if he stops seeing her she threatens to tell all anyway - either way his job is on the line. Claire (Mathilde Seigner), adopted as a baby, struggles to decide whether to try and find her birth-mother.The links between the three play a crucial part in each of their lives - a deep and supportive bond, but one which risks preventing them ever forming a relationship with someone else.