The naive and sheltered 19-year-old Katja (Helli Louise) lives alone with her widowed father. Jealous of his new love interest Svea, Katja plots to sabotage their romance by flaunting her burgeoning sensuality. But when her father rejects her advances and marries Svea, Katja sets out on a sizzling journey of sexual discovery in this erotic coming-of-age classic by Joseph Sarno.