An accidental kiss transfers the soul-crossing abilities of divine emissary Jiang Yu'an to her, forcing the two to become partners as they work together to resolve thousands of lingering obsessions. Past traumas, the good and evil within human hearts, and deep affections hidden in the passage of time unfold one after another, while an unspoken bond quietly takes root between them. But this encounter is itself the consequence of fate and karma. As thousands of lingering obsessions approach their end, sealed memories of the past and deadly calamities arrive in succession, leaving the two trapped in an impossible choice between love and destiny.