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.

Irene is an ordinary married woman living in Amiens, in the North of France. She works in a bank where, one day, she finds herself duty-bound to strip a client of her credit card and check book for ten years. Later on, while walking in a park Irene notices a mysterious homeless woman wearing a yellow coat. At a time she witnesses her shoplifting in a store. One night, on her way back home, she is attacked by the mysterious woman.