In the near future, all the surface water on the earth will rise into space without warning, forming a magnificent and strange ice ring in low-Earth orbit. Since then, mankind has lost the ocean on which it depends for survival and is facing unprecedented crisis.Existential crisis.Scavenger hunter Jiang Xingbei (played by Huang Jingyu) leads the mysterious genius Yan Dong (played by Liu Chang) to abandon the protection of Dome City and embark on a dangerous journey.China Aerospace launches the "Star Reaching Plan". Astronaut Jiang Xingyao (played by Wang Zixuan) represents mankind to explore the ice ring.In order to continue the last glimmer of vitality of human civilization, two siblings, a twin brother and a twin brother, embarked on a thrilling and ups and downs adventure.