Kent, Lasse, Olle and Sven are in their mid-twenties and have been friends since childhood. At a restaurant they meet two young women and one of them, Lena, becomes pregnant. Now, who is the father? Well, it's definitely not Kent, but the others convince him to accept the fatherhood.

Ola is a pop idol, touring with his band in Sweden in the mid-60's. Julia is a young actress in a traveling theatre company. They meet and fall in love.