Cristina is a rich, spoiled princess visiting Rome with her royal parents. The mission of their visit is to marry her off to a super-wealthy corporate type and thereby start to turn around the losses their small kingdom is experiencing in its casino business. These less-than-noble intentions get derailed when Barnaba, a zany bus driver enters their lives and falls madly in love with the gorgeous Cristina. He is nuts enough to succeed in this romantic chase after royalty, as love seems to fuel his determination to rid Cristina of her elitism and to make her see his own irrepressible attractions.

Giacinto lives with his wife, their ten children and various other family members in a shack on the hills of Rome. Some time ago he has lost his left eye while at work, and got a consistent sum of money from the insurance company, which he keeps hidden from the rest of the family. His whole life is now based on defending the money he sees as his own, while the rest of the family tries to kill him.