Under a scorching sun, Charlie is bored out of her mind and dreams of going to the seaside. But she's forced to guard a seedy motel with her cousin Jess, who's slumped in her deckchair. The two teenagers don't get along and bicker at every opportunity. On the radio, the monotone voice of a collapsology researcher 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 erupts into reality.