Qin Feng, who returned from a business trip, noticed that his wife Liu Li was behaving abnormally. After installing a camera, he discovered her betrayal with the leader. In order to take revenge, he anonymously called the police to expose the incident to reporters, making the two of them embarrassed in public. Faced with Liu Li's confession and the plea of his parents-in-law, he appeared to be forbearing and refused to divorce, but in fact he set up a situation of mental torture. At his father-in-law's birthday party, he took out the paternity test report, revealing that the child was not his own, and finally allowed the betrayer to leave the house, completing the ultimate revenge.
What plot is this?