Yang Hua was a university student who had just graduated, but an underworld soul reaper dragged her to the Netherworld before her allotted lifespan was up. Su Yi waited in the Netherworld for forty years, refusing to be reincarnated in the hope that she might live again as a human. Su Yi was an old woman who had died peacefully of old age. A lottery in the Netherworld could let her be reborn as a human and make up for the regrets of her previous life. But Su Yi felt that her last life had been too hard, and she no longer wanted to be human.
After a judge mediates between them, the two switch lives. Yang Hua is reborn into Su Yi’s body to fulfill her wish, while Su Yi goes off to be reincarnated and begin a new life.