The Man in the Mask

Ha Dae Cheol, a prosecutor from the South District Prosecutors' Office is reunited with Min Hui, a detective in the Gangnam Police Department Homicide Department.

Min Hui thinks that Dae Cheol is a jerk, but Dae Cheol sent Min Hui valuable information that will help her solve the case.

Prosecutor Kang tries to make Do Sung a murderer and close the case, but Min Hui notices his intention.

Dae Cheol saves Min Hui from Jang Gwon's threat. Dae Cheol finds out that Do Sung didn't kill himself.

Min Hui interrogates Sang Taek, who made an innocent person a murderer. Sang Taek threatens the witness.

Dae Cheol saw Min Hui, who was hurt, and took her to a hospital. Min Hui tried to find Lee Jang Gwon’s wife, who Jo Sang Taek’s guys were holding.

Min Hui finds out that Sang Taek was in charge of her mother's case. Dae Cheol decides to kill Sang Taek.

Hyeon Ung starts to trace the man in the mask. Sang Taek has his men tail Min Hui to get the man in the mask.

Min Hui tries to make Dae Cheol give up on Sang Taek's case. Sang Taek starts to suspect Jung Ho.

Hyeon Ung doesn't suspect Dae Cheol as the man in the mask anymore, but Ji Suk is still keeping an eye on Dae Cheol.

Dae Cheol takes the corruption case of Man Seok. Dong Chan learns what Sang Taek did to his mom.

Min Hui helps Dae Cheol escape right before Sang Taek is about to take the mask off Dae Cheol's face.

Min Hui looks into the relationship between YK Electronics and Sang Taek. Hyeon Ung suspects Dae Cheol.

Dae Cheol has Ri Na take Do Sung's retrial case. Hyeon Ung learns about his relationship with Dae Cheol.

Hyeon Ung's under arrest and Ji Suk begs Dae Cheol to help him get released. Sang Taek is up to a new scheme.

Dae Cheol revealed his identity as the man in the mask on camera, and Jo Sang Taek tried to stop Dae Cheol from releasing his audio file using that video.