Xu Nian, who witnessed the death of his mother, became mute due to PTSD and lost his mother's love. His father married his lover into the family and brought a stepdaughter of a similar age. Xu Nian has since been indifferent to her father and her stepmother.Jiang Wanli and her daughter Xu Yao bullied and made things difficult for her.However, Xu Nian always believed that there was another hidden reason for her mother's death. In order to find out the truth, she could only pretend to be a weak, innocent and mute girl, but in reality she was a kind-hearted but highly intelligent Black Lotus.The cold-faced boss Gu Mingyan is fierce and cruel in his tactics. His childhood experiences made him suffer from persecutory paranoia and he is wary of others.Gu Mingyan has always suspected that the death of his father Gu Tao was a conspiracy colluded by the Xu family and Gu Hongyu. After learning Xu Nian's true identity, he wanted to use Xu Nian to find out the truth, so he tricked Xu Nian into signing a marriage contract and living together in a legitimate manner, but he didn't know that heHe is the prey of Baiqie Black Hunter Xu Nian.The two people, who are competing for their wits, have gone from pretending to acting against each other in their relationship.