Szevasz, Vera! (1967)

The family travels to Zebegény for their holiday, and the following day the seventeen-year-old Vera also leaves for Lake Balaton to pick peaches in a voluntary camp there. Her boyfriend, Gyuri, goes to a film shooting. Gyuri would like to make the best of the day in the absence of parents, but Vera refuses him. She becomes jealous at once, however, when she discovers Gyuri's previous girlfriend in the shooting team.