Struggling between college and a job in a luxury hotel, Fernanda wonders if she will ever achieve something meaningful in her life. The arrival of The Man of Shit will give her an unexpected opportunity.

L’Arc-en-ciel est un authentique lieu associatif à Marmande qui accueille des personnes ordinaires mais violentées par la vie. Ses adhérents se soutiennent mutuellement dans leur lutte contre les difficultés quotidiennes. Quand on menace de les expulser, un élan de solidarité s’organise autour de Pierre, le fondateur, pour sauver cette maison d’accueil unique.

The story takes us back to Shrove Tuesday in 1967. Seventeen-year-old Françoise is a boarder in a Catholic High School. Convinced she only has one night to live before she dies, she sneaks out with her friend Delphine to attend a costume party and live this night as if it were her last.