When Ilan Halimi is kidnapped for ransom because Jewish and supposedly rich, his family and the police start a race against time to save him from the tortures of the "gang of barbarians".

Clem follows the life of a young teenager, Clémentine, who becomes a mother at the age of sixteen, at the centre of tensions between her parents and Julien, the father of her child Valentin. It deals with the problems of teenage life and that of a mother with a strong personality.