Riccardo, belonging to an upper-middle class family from Puglia, studies religion in a Swiss boarding school. He has an incomplete relationship with his half-sister Stefania, who one day announces his engagement and the next marriage. Riccardo, wearing his cassock below, desperately tries to conquer the now reluctant half-sister.

Un joven se une a una comuna de hippies y comienza un peligroso viaje.