No. 7 West Mars St.

Li Ha, a cartoonist, took an interstellar taxi to Earth for an interview, but his journey turned into a chaotic adventure due to frequent accidents. On his trip, Li Ha got married to Damei, a wandering galaxy explorer, and had two children, Nana and Xiaodang, a robot, in one day. Ten years later, Li Ha's family, consisting of Damei, their daughter Nana, and Xiaodang, are still dealing with the consequences of their unusual circumstances. His wife's work as an interstellar agent often puts them in precarious situations, while his adoptive father Li Dalong also starts to appear, adding to the complexity of their lives.