Diagnosed with leukemia, a successful orchestra conductor learns that he is adopted, and his younger brother is in a village marching band. The conductor decides to help them win a regional contest.
Fanny and Jean have everything of an ideal couple: fulfilled in their professional life, they live in a magnificent apartment in the beautiful districts of Paris and seem to be in love as on the first day. But when Fanny crosses, by chance, Alain, a former high school friend, she is immediately capsized. They see each other again very quickly and get closer and closer.