Ari (Mikko Nousiainen), a young doctor in Helsinki, has one golden rule: never sleep with the same woman twice. That is until he meets Tiina (Laura Malmivaara). Beautiful and interesting, how can Ari resist? But when Tiina introduces Ari to her girlfriends, he can’t resist them either. Ilona (Matleena Kuusniemi) is soon to be married and Hanna-Riikka (Irina Bjorklund) is a Lutheran priest, but that doesn’t stop Ari from seducing the two women.