Hwang Shi-mok had brain surgery when he was a child, which caused him to lack emotion. Now, Hwang Shi-mok works as a prosecutor. He is rational, but cold and lonely. He is also one of the only prosecutors not involved in corruption. One day, a dead body is thrown in front of him. He meets Police Lieutenant Han Yeo-jin at a murder crime scene. They work together to eradicate corruption at the prosecutor's office and solve a serial murder case.
Elenco: Cho Seung-woo , Bae Doo-na , Lee Jun-hyuk , Yoon Se-ah , Choi Jae-woong , Jeon Bae-soo , Park Seong-geun , Shin Hye-sun , Lee Kyoo-hyung , Yoo Jae-myung , Lee Kyung-young , Choi Byung-mo , Lee Ho-jae , Jung Sung-il , Kim Young-jae , Lee Hae-yeong , Jeon Hye-jin , Choi Moo-seong , Choi Hee-seo , Jang Sung-bum , Park Ji-yeon , Park Yu-na .