Lasse is a car salesman who has vowed to never get married. He wakes up hung over one morning with a wedding ring on his finger and a nude woman in his bed.

As they tour Sweden in a theatrical production of "Lysistrata", performing to often uncomprehending audiences, three women find their own lives and marriages mirrored in Aristophanes’s play. Soon, onstage drama, offstage reality, and surrealist fantasies begin to collide.

In Sweden, young US soldier, Willy, goes a.w.o.l and teams up with other deserters in Stockholm. There, he meets leftist radical beauty, Inga, who tries to seduce him into joining her extremist group's cause.