At the invitation of his sister, Jiang Xianming, an international student from China, came to the home of his "future" brother-in-law, FBI agent Sewell, who lives in New York. While studying abroad, Jiang Xianming was involved in one case after another, and together with Sewell and his partner Sifu, they tracked down the serial killer.
Everything seemed to be going well, but during the hunt for the serial killer "Hunter", the sudden appearance of the CIA agent "Crime" gave Sevier a headache. On the one hand, he wanted to find this special agent, and on the other hand, he wanted to protect him. And this special agent may be by his side...
One wave has not subsided, and another wave has arisen. Jiang Xianming's sister was also kidnapped by a terrorist organization. All of this seems to have something to do with this young man...