Plot

The story of detective Park Jin Gyeom who comes to know about the existence of time travelers while investigating a mysterious murder case.

Park Jin Gyeom is a detective who was born without the ability to have emotions. He lost his mother at a young age. While attempting to solve mysterious cases, he becomes the first person to find out about time travelers who came from the future. While investigating the mysterious cases, Park Jin Gyeom comes across Yoon Tae Yi, a genius physicist, who bears a striking resemblance to a woman who died a long time ago. Yoon Tae Yi holds the key to uncovering the secrets of time travel. After encountering Park Jin Gyeom who argues that they met by fate, Yoon Tae Yi joins him in uncovering the secrets. In the process, she discovers her own secrets. "Alice" is an organization of time travelers who help their clients to travel to the past. Yoo Min Hyuk is a passionate agent of Alice who will do anything to keep their existence secret.

Park Jin Gyeom is a detective investigating his mother's murder. He's lead to Yoon Tae Yi, a young genius physicist, who bears a striking resemblance to his belated mother. With the key to unraveling time travel's mysteries, Tae Yi assists the detective's dangerous investigation. An organization Alice provides therapeutic time traveling services for clients, but encounters entities sabotaging history's time line, in its pursuit of the Book of Prophecy.