Untouchable

Yong Hak-soo

Jung Yoon-mi

Choi Jae-ho

Goo Do-su

Jang Joon-seo, a detective squad chief and the second son of Jang clan who chases after the truth behind the death of his wife.

Jang Ki-seo, Joon-seo's older brother who turns corrupt like his father in order to survive.

Goo Ja-kyung, Ki-seo's wife who is the only daughter of a former president.