Cha Dong-tak – Starring Cho Jung-seok

Detective at Jungang Police Station
A hardworking detective who is always ready to pursue a case. He has no mercy for hardened criminals and is feared by gangs. He is fond of reporter Song Ji-an but she detests both detectives and criminals because she thinks they are basically the same type of people. So he cannot keep his eyes off of her. But then he discovered that there was another guy who was always keenly interested in her. Can Dong-tak uphold justice and crack a case while his body is controlled by con artist Gong Soo-chang?

Song Ji-an – Starring Lee Hye-ri

Reporter in national news desk, NBC network
She studied hard to pass the NBC company exam and her wish is to nab a scoop that will boost her reputation. But when she is reporting on a criminal case, her empathy for the victims gets in her way of doing her job as she puts the plight of the people above anything else. She also wants to figure out the truth to a case that has traumatized her. She started to dislike Cha Dong-tak one day. He has a split personality where he says one thing but behaves entirely differently to what he said as if there are two personalities sharing his body. Something about him draws her closer to him romantically.

Gong Soo-chang – Starring Kim Seon-ho

Con artist, Takes control of Cha Dong-tak’s body
A con artist who steals money and hearts. But he is so talented at what he does it is hard to hate him for conning people. One day, he is framed for murder but slips into a coma before he could defend himself against the false accusations. His soul becomes detached from his body and he enters the body of a detective called Cha Dong-tak. While living inside Cha Dong-tak’s body, he assumes the duty of a detective who fights crime and upholds justice. But he also has other ideas and that is to con people while also investigating who framed him.

Koh Bong-sook – Starring Lim Se-mi

Pickpocket
She was called a thief so many times in her life. And the words she uttered the most were, “Let’s get married, Soo-chang.” She grew up in an orphanage with Soo-chang and they later became business partners. He was going to be her future husband. When Soo-chang slips into a coma, she resorts to picking pockets to pay for his mounting hospital bill. Then out of the blue, some detective approaches her and claims that he is Soo-chang. What makes the matter strange is that despite the fact that the detective is not Soo-chang, he acts just like him.