Jiwon, an elite female spy from North Korea, who is currently working as an undercover cop in South Korea, suddenly receives an order to return to the North to transport a very important package. However, she loses this important package in the vicinity of the DMZ while carrying out her latest mission. She is confronted with the unlucky destiny of being stuck in the forest without being able to go to either the South or North, at which point two female serial killers appear in front of her! This is the story of a spy working as an undercover cop, who encounters serial killers looking for a desolate place to hide the corpse of their victim! All are trying to accomplish their goals while hiding their true identities.