It's late summer at a small lake, where a group of teenagers hang out. Eleven-year-old Mia, unusually perceptive, asks fifteen-year-old Hugo, who seems indifferent to everything, to describe Chaïnes – a girl he spent time with at the lake, attempting to win her over. He recalls feeling afraid to confess his feelings and struggling with Chaïnes's lively yet guarded nature, as she rarely reveals her emotions. Mia and her siblings observe them, almost like a chorus. The film unfolds slowly, with a dark, documentary-like feel, where time seems to lose all meaning.