A world-class hitman ends up swapping identities with a down-to-luck extra actor during an accident.
After the battle of Sky City, Feng Ren declares war on the human tribe. Seeing that the human tribe has no means of retaliating, Fang Qiwu, the queen of Human tribe, tries to use a time machine device to return to the past so that she can possess the body of Nan Yinmeng, Feng Ren's beloved consort, and kill Feng Ren. However when she wakes up in another timeline, she is told that Feng Ren is dead.