Ji-seop, a father and former North Korean special agent… begins tracking his missing daughter

At the end of the broadcast, a shocking backstory was revealed: Director Kim was a North Korean special agent known by the codename '66' who had defected to South Korea. Leaving behind a past where he was not even easily granted discharge due to his knowledge of state secrets, he lived a life concealing his power; however, the scene showed him losing his sanity in search of his missing daughter, wailing, "Where is my Minji!"