Gu Qiqi, a seven-year-old child, has been living with his family in a city with rapid economic development. Apart from the puppy Duoduo who accompanies him all day long, Qiqi's favorite thing is the "Interstellar World" he made by himself. When traveling with his family in the North Pole, Qiqi was swept into another world by the enchanting and beautiful Northern Lights and the sudden hurricane. This world is the "Interstellar World" he made. After encountering too many incredible things in this strange world, can he return to his own world?