Story is based on Estonian literary classic Eduard Bornhöhe’s character, inventor Jaan and it tells the stroy about his correspondence with the spirit of famous Italian polymate, the great man of renaissance Leonardo da Vinci. Taking into account all the rules of physics they try to fly a man high into the blue sky. There is also a romantic line and triangle of love in the film, where besides Jaan and Leo’s spirit an important role is plaid by Jaan’s beautiful wife Liisa.