With the help of her sister, 5-year-old girl Lilo took in a stray dog. She named the dog Stitch and hoped that Stitch could add some fun to her life. But Lilo never expected that Stitch was not a poor stray dog, but a dangerous person with six legs from an alien planet who just sneaked to Earth during exile! In order to hide his identity on Earth, Stitch could only "endure humiliation and live in hiding", hiding his two legs to make himself look like a dog. During the days of getting along with Lilo, the kindness and innocence of the little girl made her and Stitch inseparable good friends.