Life on a farm in Kitkankoski is disrupted when construction of a hydroelectric power plant begins in the area. Determined Emma, who has returned from America, and stubborn local farmer Jeremias Junnila clash when Junnila refuses to produce milk for the construction site. At the same time, a romance blossoms between Junnila's daughter Hillevi and Eero, who works at the construction site, but Eero is not the only worker who seeks Hillevi's love.