Gang boss Cha Eun-jin narrowly escaping death, waking up with amnesia and being rescued by middle-aged widower Yun Hae-cheol, owner of a Chinese fusion eatery outside Seoul. Two years later, and Eun-jin is working for him as a tireless delivery girl, driven by an energy she can't explain and occasionally revealing martial arts skills that come from some blanked-out past. With Eun-jin's husband nowhere to be seen, Hae-cheol itches to get his hands on the attractive, but sexually neuter, young woman while Eun-jin's obsessively attempts to recover her memory by plugging herself directly into the electric supply.