'Kurt' claims to be a sales rep. He also claims to be English in spite of his heavy Italian accent. Kurt is an habitual liar and a dangerous driver, at the very least. In the south of France he meets Léa, age 16. Between his increasingly strange dates with Léa, Kurt engages in a number of armed robberies, some successful, some not... The police are perplexed by a series of crimes including disappearances and a murder. They conclude that they are dealing with a madman... After he proposes, Léa breaks up with Kurt. The attempt to find a new girlfriend leads to a shooting by Kurt, now calling himself André. Léa's information identifies Kurt/André as Roberto Succo, psychiatric patient and parental murderer. The police hunt for Roberto covers three countries.

A bored college student falls in love with a stranger who encourages her to escape her bleak existence.

What is beautiful about adolescence is that it is a time when everything is still possible. The four main characters are each conditioned by their background and environment, but they refuse to accept any predestination and to fight it. Expelled from schools, spurned by lovers, confined by identity these youngsters just keep on running, frustrated and in flames. Lonely hearts, intoxicated by music and alcohol, by the heat of minds and bodies, burn to ashes.

Cédric Kahn's "Bonheur" is the eighth episode of the 9-part Arte series "Tous les garçons et les filles de leur âge", a series of medium-length (around 1h) made-for-tv movies about teenagers. An 85-minute version of "Bonheur" has been distributed as "Trop de bonheur" (a more satisfactory version, according to the director).