Zhou Yan broke into a secret meeting between his wife Ruan Yun and his friend Wu Xiang. After investigation, he found that the two were not only seeking money, but also planned to kill him accidentally to cheat his insurance. He also learned that Wu Xiang had used the same method to kill his ex-girlfriend. Zhou Yan followed his plan and Ruan Yun lost his footing and fell off the cliff after being exposed. Unexpectedly, Wu Xiang forged evidence of domestic violence and infidelity, and his ally Lin Wen betrayed him. Zhou Yan was sentenced to ten years, and he finally learned that he had been the prey of Ruan Yun's scheme from beginning to end.