Iris

Hyun-jun falls in love the moment he sees Seung-hee. But Seung-hee disappears, and he meets her again on his first day at work as an NSS agent.

Hyun-jun is unhappy that Seung-hee intentionally approached him. As his boss, she doesn't treat him nicely, but he kisses her and they start dating.

Hyun-jun finds the priest who raised him after his parents' death. He asks about his past, but hears nothing. He and Seung-hee go to Japan together.

Baek San gives Hyun-jun a solo mission, which is to assassinate North Korea's top figure. Despite tightened security, Hyun-jun begins the mission.

Cheol-young and Sun-hwa are hot on Hyun-jun's trail. Without knowing Sa-woo is after Hyun-jun to kill him, Seung-hee says she will help Sa-woo.

A mysterious person saves Hyun-jun from a jet crash. After recovering, Hyun-jun leaves Hungary, and Seung-hee finds it hard to accept his death.

During interrogation, Hyun-jun is told to assassinate a Yakuza boss. The President secretly invites North Korea's top figure to South Korea.

Seung-hee becomes obsessed with finding out if Hyun-jun is really dead. To make her accept his death, Sa-woo leaks fake evidence, and she despairs.

Hyun-jun passes tests. Cheol-young lets him join his terrorist team and Hyun-jun prepares for an attack. The NSS finds signs of possible terrorism.

Seung-hee arrives at the NSS late and meets masked Hyun-jun. While trying to protect her from terrorists, Hyun-jun gets shot by her...