My Sister and I (1987)

Carlo is a responsible sibling who deals with his black-sheep sister Silvia in this situation comedy. When Silvia returns after many years to attend her mother's funeral, Carlo deals with the fallout caused by her many love affairs. Carlo is convinced to kidnap Silvia's child whom she left in a Hungarian children's home, but she soon abandons Carlo and the baby when she takes up with a British rock star.