Under a scorching sun, Charlie is bored stiff and dreams of going to the seaside. But she's forced to stay in a dingy motel with her cousin Jess, who slouches in her deckchair. The two teenagers don't get along and bicker at every opportunity. On the radio, the monotone voice of an eminent researcher in collapsology predicts the imminent end of the world. The pool is empty, the sun is beating down and the tension is mounting: the ecological apocalypse announced on the airwaves suddenly becomes real.