When he had been a kid, that caused him to lack 17, hwang Shi-Mok had brain surgery. Now, Hwang Shi-Mok functions as a prosecutor. He is rational, however cold and lonely. He is also one of those sole real prosecutors in corruption. 1 evening, a body is thrown infront of him. He and Police Lieutenant Han Yeo-Jin at a murder crime scene meet. Solve a serial murder case and they work together to eliminate corruption at the prosecutor's office.