The story tells the story of orphan Judy Abbott, who grew up from an innocent girl to a beautiful girl. Judy, an orphan, lived in the dark and gloomy John Greer Orphanage since she was a child. This made her develop a cheerful and optimistic personality, considerate of others and live her life attentively. She is very good at writing. One day, a mysterious kind-hearted person decided to sponsor her to attend a boarding high school in New York after reading her satirical novel. Judy knew nothing about this kind-hearted person, only that he was anonymously called "Daddy-Long-Legs". Finally, Judy left the orphanage where she grew up and flew to a wider world. There, she met her roommate Julia, who came from the upper class, and her uncle Jarvis. Judy, who secretly loved Jarvis, struggled because of the huge gap between their identities. When would her happy life come? The 40-episode Japanese animated series "Daddy-Long-Legs" is adapted from the novel of the same name written by American female writer Jane Webster in 1912. This animation won the Excellent Film Award for Children's Programs of the Japanese Agency for Cultural Affairs.