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.
One gunshot, one death, one moment out of time that irrevocably links eight minds in disparate parts of the world, putting them in each other's lives, each other's secrets, and in terrible danger. Ordinary people suddenly reborn as "Sensates."