Though he is rational, a childhood brain surgery leaves prosecutor Hwang Shi Mok to lack emotion. Cold and lonely, he's one of the only prosecutors not involved in corruption. When he meets Police Lieutenant Han Yeo Jin at a murder crime scene, they join forces to eradicate corruption at the prosecutor's office and solve a serial murder case.
Kim Soo Hyun experiences the unfathomable when her daughter is kidnapped and murdered. Discovering a miraculous ability to go back in time exactly two weeks before the event, Soo Hyun races against the clock to unravel the plot and save her daughter. But when a private investigator sheds new light on the crime, Soo Hyun uncovers a secret far more treacherous than she could have ever imagined.