Se-ri wakes up suspended in a tree within the Demilitarized Zone (DMZ) on the North Korean side. This is where she has her first, fateful encounter with Ri Jeong-hyeok (Hyun Bin) , a dedicated North Korean army captain.

Often, dramas take 3–4 episodes to "get good." defies this trend. Episode 1 is a masterclass in efficient storytelling.

Given the phrasing, I'll instead provide a for Episode 1 of a drama with that name, as if it were a verified Vietsub release: