Geum Bok, a naïve aspiring actor from the countryside, moves to Seoul — only to be scammed and kissed by Bi Hyeong, Dokkaebi — the goblin king. Uniquely able to transfer energy to Bi Hyeong safely, Geum Bok is brought into their home by loyal bodyguard Gil Dal, leading to an unusual three-man cohabitation. Geum Bok becomes Bi Hyeong's “spirit lunchbox,” while Bi Hyeong acts as a "ghost repellent" for Geum Bok.

Hoping to improve his appearance, Geum Bok visits a plastic surgery clinic, where he meets Doctor Ji Gwi — a gumiho, the mythical nine-tailed fox. Ji Gwi follows Geum Bok home, intending to seduce him, but instead unexpectedly reunites with his ancient love, Gil Dal. As misunderstandings deepen, Geum Bok becomes a target for vengeful ghosts due to his kiss with Bi Hyeong. In this fantasy romance laced with horror and suspense, Geum Bok must navigate the obsessive desires of three supernatural beings.