Making the most of the family home while her parents are away, Nicole (22) is enjoying a peaceful summer with her best friend VÔeronique. When Nicole's older brother shows up with his band to record an album, the girls' friendship is put to the test. Their vacation takes an unexpected turn, punctuated by a heatwave, Nicole's growing insomnia and the persistent courtship of a 10-year-old boy. Tu dors Nicole takes a humorous look at the beginning of adulthood and all its possibilities.