In 1994, Mi-hyun is ordered by Deputy Director Min Yong-jun to get close to and learn about the thought process of black ops agent Kim Doo-sik.

Doo-sik shows up at Mi-hyun's apartment with a plan to escape Deputy Director Min for good.

Mi-hyun asks Deok-yoon where Doo-sik is, and he tells her what happened in the North.

Parents and children fight to protect each other. Will this repeated war ever end?