When 12-year-old Elsi Björkman and her mother Paula return from a week's holiday abroad, Elsi immediately notices that someone has been in her room. She tells her mother about it, but she does not believe her. At the local supermarket Elsi meets Henry, who seems to spend his time returning shopping trolleys. Elsi does not know anything about the boy, who has an irritating habit of appearing from out of nowhere, only to disappear again, as if into thin air. Nevertheless, the children become friends.
Young Alex Sammako has seen his brothers defy the law in a series of deeds that first land them in jail, and then, after they escape and return to their rural home, land them back in the lap of their locally notorious family. Alex wants nothing to do with them. He is in love with Mirja, whose family is not that different from the Sammakos, but who shares Alex's viewpoints and feelings. Not helping matters is a police department convinced that all Sammakos are bad, and the family itself, pressuring Alex to follow in their murky footsteps.
