Manager Kim works at a small savings bank. He seems like an ordinary single father, raising his daughter Min Ji. He has a secret that he can't reveal, even to his own daughter. His secret is that he is a former spy and he was dispatched on countless special operations. He is on North Korea's most wanted blacklist and his existence in South Korea is like a time bomb that should not be revealed. Hiding his past, he lives like an ordinary citizen, but his beloved daughter Min Ji goes missing. He struggles to save his daughter, not hesitating to reveal his secret and risking everything.
