The story of Won-cheol, an agent of the National Intelligence Service of the Republic of Korea, who is in charge of removing VIPs who participated in the operation of developing weapons of mass destruction in North Korea.

Won-cheol of the National Intelligence Service of the Republic of Korea is offered a mission. Eliminating VIPs who participated in the operation to develop weapons of mass destruction in North Korea. Won-cheol is forced to accept the mission while thinking of her daughter 'Ah-reum' who is in danger - The secret operation of South and North Korean special agents begin.