On a quiet night, in the wilderness, the car driven by Tian Jingzhi (played by Wu Qian), a second-tier actress in the entertainment industry, collided with an oncoming truck. Strangely, there was a coffin on the truck, and Jingzhi's blood flowed into the coffin, which actually resurrected the person lying inside! That person's name is Xue Lingqiao (played by Kim Tae-hwan), a "genetic mutant" who will not get sick or injured. He has been in the world for more than 400 years. A hundred years ago, he was framed and drained of blood from his body, and then was locked in a coffin. Xue Lingqiao rescued the unconscious Tian Jingzhi, and after several twists and turns, he moved into the latter's home. The sudden boyfriend made Tian Jingzhi at a loss, and the conspiracy and secrets surrounding Xue Lingqiao gradually surfaced...