Olavi Koskela, a ladies' man, joins the loggers. As a log driver, Olavi travels from place to place, seducing one girl after another and then abandoning them. Only Kyllikki, the daughter of a wealthy family, is able to resist his advances and incites him to challenge another log driver to a race down the rapids. Through Kyllikki, Olavi is forced to face the consequences of his actions and reflect on the meaninglessness of his life.