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.

Ariane is convinced that her boyfriend, Jean-Jacques, is having fantasies about another woman, Élisabeth. In an attempt to save their relationship, Ariane encourages Jean-Jacques to pursue Élisabeth, believing that this is the best way to free him from his own desires. Jean-Jacques presents himself at Élisabeth's house, not realising that she is the daughter of the French President.

A boxer is unfairly suspected by his new neighbors of beating his children.

Ridden by guilt for not being able to have a child, wife decides to conceive by cloning. The daughter she gives birth to is therefor almost identical to her. The child starts to grow rapidly and slowly replaces mom in the household.