Young Peng Xiaotian, as a volunteer for Earth's "Alien Coexistence Interstellar Survival Plan", boarded an experimental spaceship with scientist Su Qingcheng and hacker Wang Yingjie to the Alien Planet. They originally planned to study coexistence, but unexpectedly landed on the territory of the alien race. The alien leader Airlo used endless weird tests to make things difficult. The alien ecology is strange and daily "laughs" are constant. The team grows up getting along with the aliens and the environment, and encounters bizarre crises and political intrigues from time to time. In the end, they work together with the alien girl Lenana and the cute companion Kaka to resolve the multi-star crisis and bring the aliens and humans towards true common prosperity.
