An industrial worker from the mid-seventies encounters the stout daughter of a wealthy American businessman. The daughter falls in love with the worker and begins to pursue him.
The young Luca grew up with his uncle Augusto, owner of a shoe store. The latter, determined to "start" the clumsy nephew sexually, takes him to a brothel in Florence and throws him into the arms of the stupendous prostitute Nerina, of whom Luca falls hopelessly in love.