Moon Seung Mo is a popular chef. Due to the sudden deaths of his parents by fire, he moves to Seoha Village. His peaceful daily life suddenly changes there with the sudden appearance of Yoo Yoo Jin. Meanwhile, Yoo Yoo Jin is a world-famous fashion designer. She works under the name of Yoo Bella. One day, she has a car accident. The car accident causes her to lose her memory completely and she ends up in Seoha Village. She acts very eccentric there and becomes a troublemaker. Due to her behavior, she picks up the nickname "Yoobyeolna" ("What an eccentric").

For years, detective Jae-hwan has been obsessed with catching Jin-hyuk, the serial killer responsible for the death of his partner and brother-in-law, even if the path to revenge means skipping a few rules. But, when the much-delayed encounter finally comes, things don’t go at all as expected—after a chase and a muddled accident and having been missing for a month, Jae-hwan wakes up handcuffed to a hospital bed, only to discover that he’s trapped in Jin-hyuk’s body and that, in turn, the killer is taking his place alongside his family. But this is only the starting point to a sinuous, extreme narrative filled with surprising twists and tinged the red of blood and neon lights. In his brutal debut, Kim Jae-hoon appropriates the body switch trope in order to give shape to a feast for genre film lovers. 源自：