After a spate of murders terrorizes the local female population, renowned psychiatrist Kim Daniel is called in to treat the only known survivor. Oh Hyerin remembers little of the attack, and it’s up to Daniel to delve deep into her psyche to try and uncover the hidden truth. But there’s far more lurking in the depths of Hyerin’s mind than hazy memories of the incident, and soon there are much bigger things at stake than simply catching a serial killer. You see, the food chain is more fragile than it seems, and sometimes…the prey bites back.