Fei Zhen (Simon Yam) and Qiu Li (Wallace Huo) took over the case...Ou Jian (Zhang He)'s wife Nan Fang (Rayiza) gave birth to a child she should not be related to. He was sure that he was cuckolded and wanted to find out where the child came from, but was killed by the killer. He spent his days in panic and found that everything was a conspiracy between his wife and the adulterer. Xie Tianyou (Wallace Huo), who was wrongfully imprisoned for 5 years, began to retaliate against Ou Jian and decided to use a high IQ crime to take back everything that should belong to him. While Fei Zhen found out that Ou Jian had a subtle relationship with the new employee Tang Chan, Nan Fang discovered that his good friend Shen Jiamei, who had always been aggrieved for him, was actually Ou Jian's ex-wife. The confrontation with the killer, the dealings with his wife, the encounter with the female employee, and the reunion with his ex-wife, Ou Jian was in deep crisis. There are unknown secrets hidden in everyone's love...