Set during a fictionalized Joseon Dynasty, it follows Gu-cheon, an arrogant ghost-slayer who can walk between worlds, and Saeng-gang, a lowly court lady who hears the dead, as they team up to save the last royal heir.
Gu-cheon escapes danger with Saeng-gang's help. As the king falls ill, Gu-cheon fights the evil spirit — only for a guardian spirit to stand in his way.
