Lili, 19 years old, returning from holiday, learns that Loïc, her twin brother, has quit the house after a violent dispute with their father. The weeks pass with no news and Lili is so concerned that she lets herself go. Refusing to eat, she is hospitalised when a letter arrives from her brother. Living off small jobs, he judges their father responsible for their little lives and renounces him forever. Reassured, Lili recovers, leaves hospital and sets out to find Loïc. What she discovers is beyond her understanding and will make a woman of her. Adaptation of a successful novel by Olivier Adam