Jean-François loves Constance with a tender and passionate love. It is enough to see the behavior of this lunar clown to realize that every moment passed away from his beloved is a real torture. Shared between endless trips in the corridors of the metro and evenings between friends, it is not good in his skin. In search of complete happiness, he tries to satisfy his vocation: to become acrobatic with Constance, but, as a result of mediocre performances, even null, this aspiration leads to a dead end.