An ordinary boy, Song Yili (Peng Yuchang), is hit by life's "storms" and is disheartened when he meets a sick girl, Xiao-Ju (Yang Enyou). Xiao Ju's mischievousness brings a bit of noise to his endless life, but also adds a lot of color, allowing him to gradually accept this "little troublemaker" who follows him around. In order to help Xiao Ju fulfill his wish, the two embark on a journey into the unknown, encountering all kinds of people, they laugh and cry together, and then set off again, and finally see the different sides of life, whether it's dull or lively, it's all worth living well. This movie is based on the novel of the same name by Zhang Jiajia.