Overview: Kang Dong Soo meets Yoo Shi Hyun when she mysteriously shows up and saves his life. When he finds a sketch of a ring he recognizes in her notebook, Dong Soo goes looking for Shi Hyun.
Overview: The team struggles to locate Dong Soo before he does something drastic.
Overview: Nam Sun Ho puts his plan in motion. Chief Moon agrees to join forces with Dong Soo for this case.
Overview: Nam Sun Ho's plan does not work out the way he expected. The team has a new case.
Overview: Dong Soo thinks he has figured out what is going on until Baek Woo Jin tells him that there is much more to it.
Overview: The team tries to figure out how they are going to find Tae Joon's notebook, but does it hold the answers they are looking for?
Overview: Tae Joon offers Do Jin an opportunity to meet the man in charge. Shi Hyun has to decide what she is willing to sacrifice for her brother.
Overview: Dong Soo and Shi Hyun investigate a case from 20 years ago and race to stop Do Jin.
Overview: Park Moon Ki asks to meet the Elder. Shi Hyun draws the funeral of someone on the team.
Overview: Dong Soo and Shi Hyun try to find out what Yoon Sung Soo knows. Park Moon Ki demands answers.
Overview: Dong Soo tells Young Shim his theory. Now they need to find some evidence to back it up.
Overview: Tae Joon is determined to prevent Tae Wook from contacting the Elder. Park Moon Ki finally gets to meet the Elder.
Overview: As more facts are exposed, Shi Joon's mission becomes more and more challenging.