Pyo Min-soo

Set 3 years after the first season, members of the National Security Service (NSS) team, including Jung Yoo Gun, Ji Soo Yeon and other agents attempt to pull the curtain on mysterious group IRIS. Agent Yoo Gun is the leader of the NSS TF-A team. While he goes up against Baek San, Yoo Gun becomes involved in a case which changes his fate forever.

A closeted middle aged man named Suh Moon Gi is unsatisfied with his wife Suh Jung Hye. He meets a young homosexual employee Shin Joon Young at his company and falls in love.

Set 3 years after the first season, members of the National Security Service (NSS) team, including Jung Yoo Gun, Ji Soo Yeon and other agents attempt to pull the curtain on mysterious group IRIS. Agent Yoo Gun is the leader of the NSS TF-A team. While he goes up against Baek San, Yoo Gun becomes involved in a case which changes his fate forever.

A closeted middle aged man named Suh Moon Gi is unsatisfied with his wife Suh Jung Hye. He meets a young homosexual employee Shin Joon Young at his company and falls in love.