Lin Xue, a middle-aged female teacher, and Zhao Jianguo, the head of a state-owned enterprise, disappeared mysteriously in a tryst cabin in the suburbs. There were no signs of fighting or blood at the scene, leaving only a red vest covered in dog hair. And that dog hair belonged to a wolfdog that should have been "humanely destroyed" two years ago - the murderer of a vicious campus dog case.
Interpol Jiang Mu took over the investigation, but found that the dog on the dead list was still alive. Su Mian, a mysterious woman who calls herself a "private detective" approaches, and her brother is the victim of the attack two years ago. She tracked the dog for many years and firmly believed that the dog's owner was the real devil.
As the investigation deepens, Zhao Jianguo's driver and taciturn distant cousin Chen Dazhi emerges. He secretly trains wolf dogs in a remote farm and has an almost religious loyalty to his cousin. In his twisted world, his cousin is the "alpha wolf" and he is the "loyal dog", and the female teacher who "tempted" his cousin to elope must be eliminated.
People, dogs, and wolves take turns to appear. When the truth was poured out in blood at the abandoned construction site, everyone discovered that the most terrifying thing was not the fangs of the dog, but a man who turned himself into a beast in the name of love. And that starless night sky witnessed a desperate redemption.
