Geologist Willy is brought down by heat stroke in the Australian outback. He impetuously moves to temperate Sweden to recover. He is a cheerful tourist amongst mostly immigrants until he comes up against sulky valkyrie Svea in a Dalarna idyll. After just one weekend with Svea he meets his end in apparently random street violence, which echoes a primal encounter at the time of his collapse down under. Svea flees in shock but is overtaken by a similar irruption of random brutality. A storm of calamities follows the path of Willy, who is nick-named "Willy-willy", for an Australian whirlwind.