Zhang Dongsheng is a good husband and son-in-law in others' eyes, but only Zhang Dongsheng knows that he is here for the adoption of his wife Xu Jing. He thought he could get everything if he got love, but he didn't expect that Xu Jing's parents didn't think highly of Zhang Dongsheng, and even Xu Jing betrayed Zhang Dongsheng. Zhang Dongsheng couldn't stand all this, so he pushed his in-laws down the mountain and killed his wife.
The evidence of Zhang Dongsheng's murder was known by three children, namely Zhu Chaoyang, Yan Liang and Pupu. Instead of calling the police, they chose to blackmail Zhang Dongsheng. In the process, Zhang Dongsheng had to kill many people, but he didn't expect that he was used by these three children. He was very angry, but he didn't intend to kill them, so he constantly stimulated Zhu Chaoyang and Yan Liang on the cruise ship, hoping that they could kill themselves and become people like themselves.
Finally, Zhang Dongsheng deliberately picked up an ice pick and stabbed Zhu Chaoyang. The police thought he really wanted to kill Zhu Chaoyang, so he shot and killed Zhang Dongsheng.