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.

The Three Wise Men – Balthazar, Melchior and Gaspard – are on their way to Bethlehem to pay homage to the infant Jesus when they are suddenly, an inexplicably, transported two thousand years into the future. They find themselves walking the streets of Paris, where they encounter a young woman called Macha who, they are convinced, will lead them to the newborn Messiah.