Stupid Young Heart is a story about the first love of lightly built, carefree Lenni and gorgeous and popular Kiira. Not yet even properly in a relationship, they discover that they are expecting a baby, and decide to keep it – partly as a statement to their families who have lost touch with what goes on in the teenagers’ lives. Lenni then has nine months to become a man. Having grown up without a father figure, Lenni receives some yearned for adult attention from an unlikely friend; 40-year old Janne, a member of a right wing activist group. After taking part in a scrambled attack on a local Mosque, while Kiira is rushed to the hospital to give birth, Lenni realises that he can be a man in his own way, even if he never had a chance to be a child himself.

Summer 1962 and Olli Mäki has a shot at the world championship title in featherweight boxing. From the Finnish countryside to the bright lights of Helsinki, everything has been prepared for his fame and fortune. All Olli has to do is lose weight and concentrate. But there is a problem – he has fallen in love with Raija.