Summer '76, there's a heatwave and the Swiss countryside is drying out at top speed. In this stifling environment, Gus who is thirteen years old and son of a farmer, sees both his family environment and his innocence relentlessly breaking. He's living the end of a world.

Kathy, a rebel and reserved teenager, wants only one thing: to escape from the psychiatric institution where she was locked up. She soon escapes and searches for her father, the only person who can free her from her prison. To make things a little more complicated, her roommates, Nabila and Carole, join Kathy in the escape.