There are five of them.
Claire, who sits awake beside a snoring husband and a little boy who is not hers.
Jacques, a psychiatrist at the end of his career whose lonely nights are punctuated only by anonymous phone calls.
Michèle, a retiree whose dark secret compels her out of bed and to church.
Lena, a young goth who cannot brave the dawn, volunteering at a local café.
Hervé, a shy accountant who sits in bed, panicking about his job while scrolling through emails into the early hours.
They have one thing in common: insomnia.
As meetings led by sleep specialist Marie-Hélène draw them together, friendships will be formed and confessions made... but will they discover what's keeping them awake? And more importantly: will they be able to get to sleep?