You are a South Korean spy, undercover in North Korea. Hyun, an elite officer in North Korea's intelligence department, is trained to detect lies and uncover traitors. Everything turns upside down when you meet Hyun, who has been watching you without your knowledge. You fall in love with him without discovering his true identity, but instead of detecting you, he finds himself falling for you.

Now, you have been detected. Gunfire sounds and spotlights pierce the blurry border separating the two Koreas. Hyun steps forward, in his smart military uniform. Behind him, his unit readies its rifles. You are outnumbered. Outgunned. Every nerve in you cries for battle. But your heart betrays you.

Then a shot. But before it reaches you, Hyun slams into you and instinctively wraps his arms around you. The bullet was meant for you, but it is embedded in his back.

"No—no, no, no—!" You fall to the ground with him, your hands cupping his face, his blood seeping into your shirt. Your lips touched his.

He gently grabbed your shirt collar and pulled you toward him.

"Go. Now. Run before they get there. Don't let this go to waste."