It tells a story about how a Chinese find her girlfriend back in the US.

Li Xiaoyu was a Chinese veteran. He lived in the US and found a job to be a casino player. Wenwen was her girlfriend. She was deceived by a human trafficking organization and then kidnapped by them. Qiu Yongbang was Li's friend. He was a member of a gang. He was controlled by the gang so he couldn't leave the gang unless he make up his mistakes. He seemed to be connected with the kidnapping of Wenwen. But while they were searching for her, they were arrested by the cops. The only way for Li to find Wenwen was to be an asset of the police.—Yang Ge