An ordinary boy, Song Yi Li, is hit by life`s "storms" and feels disheartened until he meets a sick girl, Xiao Ju. Her mischievousness brings noise to his otherwise endless life and adds much-needed colour, allowing him to gradually accept this "little troublemaker" who follows him everywhere. To help Xiao Ju fulfill her wish, the two embark on a journey into the unknown. Encountering all kinds of people along the way, they laugh and cry together before setting off again. Finally, they see different sides of life and realize that whether dull or lively, life is always worth living well.