One day, Planet F, originally located in Universe F, drifted into an unknown universe—the Star Universe—after a violent spacetime storm. The Star Universe consists of four planets, twelve Constellation Towns, and one Constellation Platform. Its inhabitants are warm and hospitable. To welcome the arrival of Planet F, they selected twelve (thirteen) representatives to visit Planet F for cultural exchange. But… wait a minute? They have to go to school for the exchange? When aliens meet aliens… what will happen?

On this planet, everyone can use magic. In City X, a modern metropolis of the Star Dome Federation, live three little witches: Li Aimeng, Xie Xiaoyu, and Wang Huijuan. Many funny and interesting things happen in this city. Do you think Li Aimeng is really a six-year-old child? She is not. Li Aimeng is actually an elderly grandmother. Because of this, a series of hilarious and absurd stories unfold around the three of them.

In this chaotic world, another unfortunate and unlucky person joined the gang. Life in the gang seems different from what he thought, it seems... it's also pretty good?