After more than 1,000 years of human defense wars and measures to prevent alien invasion, mankind is still heading towards extinction, leaving only a boy named He Jiuyu and a girl Su Shiyi.
After being abducted by aliens from a scattered planet, He Jiu tried to confuse the aliens by pretending to be seriously injured, and finally escaped. On the way, he met Su Shiyi, a girl pretending to be an alien. In the process of getting along with each other and experiencing life and death for a few days, He Jiuyu fell in love with this mysterious girl. But Su Shiyi finally died because he lost too much energy. He Jiuyu felt sad about this.
Then he met a girl who was similar to He Jiuyu. The girl guided him to help dead humans fulfill their wishes before death and travel into their bodies. In return, she helped him save humans. He Jiuyu agreed and completed all this. After experiencing many difficulties, he also understood many truths.
Purpose: Care for the Earth