Musical comedy starring Deanna Durbin as Gloria Harkinson, a lonely girl at an expensive Swiss boarding school. Her father is no longer alive, and her mother (Gail Patrick) is a famous Hollywood actress who, eager to maintain her glamorous mystique, has forbidden her daughter to talk about her at all: if anyone knew about her secret teenage daughter her career would be ruined. Gloria begins to invent an imaginary father for herself, making up stories and writing letters to herself from a famous explorer/adventurer. When her classmates start to see through her elaborate charade, and demand to meet Gloria's heroic father, she approaches a visiting Englishman (Herbert Marshall) out of desperation and asks him to pretend to be her daddy. Luckily, he agrees - and is soon regaling all her school friends with the wildest of tall tales. Songs include: 'Ave Maria', 'I Love to Whistle', 'Chapel Bells', and 'Serenade to the Stars'.