The film tells that Meng Lingshu, who was born in the matchmaker family, was a matchmaker for the matchmaker during the day, and at night he turned into a chivalrous "night cat". Because she was framed as a murderer in several bizarre and murderous cases, she chose to take the initiative to attack. Together she rejoices the enemy Qilin teacher He Lanhongchen, while exploring the truth, while loving the love and killing each other in the midst of suffering, and finally breaking the story of the villain conspiracy.