When the heavenly dog eats the sun and the end of the world comes, Xu Zhi, a girl with heart disease, is cruelly abandoned by her parents in a dead city. Countless heterogeneous species and monsters are born in this dead city. Humans expend great efforts to resist the invasion of heterogeneous species. And that city is also blocked and completely becomes... No one knows that in this city that can be called a monster's lair, a girl is quietly sitting in a wheelchair and playing with a suddenly appearing game console. Every time she successfully cultivates a powerful dependant in the game, the blackness that covers the entire city...

Ling Xu accidentally meets the six-year-old Qian Renxue. The two complete the Wuhun fusion skill, which allows Ling Xu to successfully unlock his golden finger. Bibi Dong: "Xue'er, could you let Ling Xiu assist me?" Qian Renxue: "Wuwu, Ling Xiu and I grew up together. No one can take him away!" Ling Xiu: "Xue'er, don't cry. I'll protect you."