The Demon King had slain Deity Yuxu a millennium back to rescue the cat demon Yingwan, resulting in Yuxu's soul entering the cycle of rebirth. A thousand years after the incident, Yingwan stumbles upon Yuxu's newly reborn form in the metropolis and wishes to resume their past relationship. Yet, the duo faces the challenge of Yingwan's precarious state of health. Will they overcome all obstacles and reunite once more?