Welcome to Hoseon: The land of myths and spirits, where monsters take human form and exorcists come with assault rifles! For wandering spirit hunter Gal Park, sniffing out and dispatching disgruntled monsters and spirits is all part of the job – no matter if they prey on the wicked or the innocent alike. But everything becomes a little more complicated when he crosses paths with his former comrades at the Bureau of Exorcists. Not to mention, there’s something afoot in the Dragon King’s Underwater Palace, and a mysterious red-haired girl who can see right through spirits in disguise…