Poseidon

Kwon Jung Ryul assembles Unit 9 focusing on capturing an infamous criminal, Choi Gon Hui

Lee Su Yun finds out about her past and missing father, Kim Sun Woo shifts away from the team.

Kim Sun Woo and Lee Su Yun Find An Dong Chul. The team explores different methods of investigation.

Kang Ju Min reveils a different side of himself. Former head of a rival gang brings a surprising alliance.

Lee Su Yun learns more about her mission and why she was recruited to Unit 9. Kim Sun Woo and Lee Su Yun grow closer.

The Black Triad has been disturbed by Unit 9 and are seeking other means of keeping their way of life. Jun Suk Su makes a surprising proposal.

More guests move into Lee Su Yun and her mother's home. Lee Su Yun bonds with victims they rescued.

The team makes a triumph capture. Kim Sun Woo discovers a shocking secret that changes the course of the investigation.

Lee Su Yun and Kim Sun Woo act recklessly from a clue relating to her father. Kim Sun Woo discovers a shocking secret.

After losing a key witness, the team is lost. Kim Sun Woo and Lee Su Yun try to dig deeper into Chang Gil's past.

The chief wants to know what happened to Kim Sun Woo after not receiving a message. Soo Yoon breaks into GML Korea with a colleague and they see a suspicious man.

CO Kang could end up dead if his problems continue to be an issue. An inmate says that Kim Sun Woo may have knowledge about a spy’s true identity.

Soo Yoon is unconscious after being brutally attacked at a safe house. A struggle breaks out as the hostages get free from the van and try to subdue all of their captors.

The team receives a clue that connects Choi Hee Gon to the entire conspiracy. Soo Yoon sees another person at GML Korea but she needs help to discover their identity.