Sixteen year old Maria arrives in Stockholm. She is going to stay with her aunt. Already at the Central station events occur that change her route.

Architect Sture Ahrengren walks out of his job with an architecture firm with the support of his wife Kristina. He gets a position with an old friend, Balstar Ekberg, who has a big engineering job going. But Sture gets entangled in a romance with Ekberg's wife, Helena.