Lee Shinhui has always juggled odd jobs to support his ailing brother, but when he accidentally shatters a mysterious marble, he's dragged into a demonic realm! Just as all hope seems lost, he's rescued by a powerful dokkaebi named Ohwi, who demands Shinhui's soul qi to satisfy his own hunger. Trapped in a dangerous world and bound to Ohwi's desires, can Shinhui find a way back home, or is he doomed to become Ohwi's personal soul qi vessel forever?