Gianca and Nick are two young musicians that dream of putting together a jazz ensemble of their own. After several incidents, they finally put together the "Joy spring Quintet", around which revolve several female personalities, friends and girlfriends. The group puts the spotlight on Nick's natural talent, and shows up Gianca's mediocre artistic talent.
After nine years, the two boys find themselves at a concert Nick is giving in Bologna, where Gianca who is mixed in with the audience, feels troubled and at the same time emotional, as the piece they are playing is the one he wrote together with his friends, and for his friends, when life for them, held no expectations. Now the song has become a hit. The title is: " But when are the girls coming ?"