There are three children growing at Tammaru farm - one boy, Margus; and two orphan girls, Mari and Tiina. Margus' parents want him to marry Mari instead of Tiina as she is more their kind. Hotblooded Tiina is completely different from them and her mother was once executed for being a witch. Thinking that Tiina has bewitched Margus, Mari starts to publicly accuse her stepsister of being a werewolf.

Toomas Joller has been an actor for twenty years. Joller is popular and has been awarded the honorary title of People's Artist. But Joller's star is gradually fading. He becomes egoistic and self-centered, his performances remain superficial. An actor's internal combustion requires hot water, which Joller uses in abundance together with his friend, the comedy actor Ruts.

Tõnu, student of agronomy, is a trainee at a flourishing collective farm. He finds out that there are many talented singers there among whom there is Malle with a specially beautiful voice. However, the local community club is closed and the singing ground has been turned into a pasture. Malle's father is the manager of the collective farm and considers singing a waste of time. When the collective farmers hear about Tõnu's conducting skills, they will act against the manager's will. The big song festival is going to be held soon and people want to go there. Preparations of the choir go well; however, the manager of the collective farm gives no permission to take part in the festival. Singers are losing their hope, but then comes a helping hand.