A trustee of the John Grier orphanage has offered to send Judy Abbott to college. The only requirements are that she must write to him every month and that she can never know who he is. Judy's life at college is a whirlwind of friends, classes, parties and a growing friendship with the handsome Jervis Pendleton. With so much happening in her life, Judy can scarcely stop writing to 'Daddy-Long-Legs', or wondering who her mysterious benefactor is.