Li Xiaoqi, a young man from Earth, accidentally traveled through time and was involved in an interstellar alien melee. He is witty, humorous and adaptable, and gradually gets acquainted with octopus leader Arnock, mechanical omnic Namisi and other strange partners, and forms an "Earth Experience Group" to take risks in the cracks of the universe, the territories of other worlds and various chaotic forces. Each volume independently tells the story of a major crisis in the alien world: straying into the alien black market, becoming an interstellar hero, and ultimately saving the multiverse. In the process, Li Xiaoqi used complaints and sincerity to gain friendship and solve crises. He was full of tolerance for alien life and faced the constant challenges of the dangerous enemy Bolando. The whole book is humorous and funny, with a compact plot, including growth and confrontation between good and evil. In the end, he leads a group of "miscellaneous fish" aliens to reverse the fate of the universe and return to peace.