Cho Seung-woo, Bae Doo-na, Lee Jun-hyuk, Shin Hye-sun, Yoo Jae-myung
Hwang Shi-Mok had brain surgery when he had been a kid, which caused him to lack empathy. Hwang Shi-Mok works like a prosecutor. He's rational, but lonely and cold. He's also one of those only prosecutors maybe not engaged with corruption. 1 afternoon, there has been a person thrown infront of him. He meets with Police Lieutenant Han Yeo-Jin at a murder crime scene. Solve a serial murder case and also they interact to eradicate corruption.