Summer 1990. Elsa and her father go to the South of France on vacation. They meet up with old friends and their four children in a house lost in the hills. Immediately, the complicity between adults and children is rekindled. But Elsa senses a growing tension and secretly worries.

Elisa, a fiery and passionate teenager, wants to enjoy the summer of her 17 years on the steep slopes of the Vercors where she grew up. But her mother leaves the house and leaves her alone with her father to look after her disabled sister. An increasingly heavy responsibility that makes love switch to hatred.