1 - Episode 1

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.

2 - Shi Hyun convinces Jin Young to tell her story. Will Dong Soo be able to save Ji Soo?

3 - Shi Hyun and her team investigate the murder. Do Jin gets his next assignment.

4 - Episode 4

The team struggles to locate Dong Soo before he does something drastic.

5 - Dong Soo agrees to help find Shi Hyun.

6 - Episode 6

Nam Sun Ho puts his plan in motion. Chief Moon agrees to join forces with Dong Soo for this case.

7 - Episode 7

Nam Sun Ho's plan does not work out the way he expected. The team has a new case.

8 - Episode 8

Dong Soo thinks he has figured out what is going on until Baek Woo Jin tells him that there is much more to it.

9 - Episode 9

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?

10 - Episode 10

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.

11 - Episode 11

Dong Soo and Shi Hyun investigate a case from 20 years ago and race to stop Do Jin.

12 - Episode 12

Park Moon Ki asks to meet the Elder. Shi Hyun draws the funeral of someone on the team.

13 - Episode 13

Dong Soo and Shi Hyun try to find out what Yoon Sung Soo knows. Park Moon Ki demands answers.

14 - Episode 14

Dong Soo tells Young Shim his theory. Now they need to find some evidence to back it up.

15 - Episode 15

Tae Joon is determined to prevent Tae Wook from contacting the Elder. Park Moon Ki finally gets to meet the Elder.

16 - Episode 16

As more facts are exposed, Shi Joon's mission becomes more and more challenging.