Cai Xiaoying (played by Cai Ming) and Li Lili (played by Li Xueqin) are mother and daughter from the distant Andromeda Galaxy.The Andromedans are a race without emotions. Although they have been in a mother-daughter relationship for thousands of years, the two had constant friction, parted ways on earth, and did not communicate with each other for several years.And this natural mother-daughter relationship was forced to restart on the day when Li Lili's new journey in life began - Li Lili and Xiao Meng (played by Meng Hetang) got married.As an interstellar social animal, Li Lili's job is to investigate all aspects of the earth. In order to conduct an in-depth investigation, she chose to marry Xiao Meng, a man from the earth.

When they were newlyweds, Cai Xiaoying, who had spent all her wealth and still had to wait half a year to return to her hometown in Fairy Star, came to see her, planning to stay in a room for free for the first half of the year and get travel expenses.Although Xiao Meng has a “real father”, Lao Meng (played by Yang Haoyu), Lao Meng's level of unreliability is comparable to that of Aunt Cai.A young couple with their own thoughts, a mother and daughter who are venomous at each other, a father and son whose identities are reversed, and the in-laws who are strangers to each other, the “sarcastic family” forms a group.This loose family will continue to encounter all kinds of jokes and challenges in the rest of their lives.