Woojin, Ji-oh’s childhood friend and secret crush, gets possessed by a ghost on a stormy, rain-soaked day. To Ji-oh, Woojin has always been like a savior—the one who kept him from straying off path. There’s no way he can just stand by and watch. Determined to help Woojin reclaim his body, Ji-oh teams up with Gyeon-woo, a spiritualist with special abilities. After many twists and turns, they manage to drive out the spirit—temporarily. But soon Woojin’s soul begins flickering in and out with the ghost’s, and the boundary between the two grows dangerously unstable…