Heta, the strong-willed daughter of the Niskavuori family, who is pregnant, marries Akusti, a farmhand, and remains bitter toward Santeria, who broke her heart. Heta and Akusti begin their life together on the modest Muumäki farm, where they are assisted by their loyal maid Siipirikko.
Sylvi's child is run over by a bus, prompting her to drink poison. She goes blind in the process, causing her husband to lust after her much younger sister. After undergoing a dangerous operation to regain her sight, she hides her repaired vision behind dark eyeglasses, so she can spy on her sister...
