Synopsis

In 1995, a large armed robbery occurred in Guangdong. A bank cash truck was robbed by five armed robbers, causing a loss of $15 million and three bank's escorts were killed. The incident shocked the whole country, the Police immediately set up a task force, led by Wang Shouyue (played by Lam Ka Tung) and He Lan (played by Zhang Songwen), and quickly found the whereabouts of the five robbers, except the real mastermind behind the case, the owner of a construction company, Chen Xinwen (played by Da Peng), and his cousin Chen Xinnian (played by Sun Yang).

Chen Xinwen and Chen Xinnian embarked on the road to escape, and has since evaporated. Twenty-one years later, the case has long faded from the public, and Wang Shouyue also retired. However, a usual video with a blurred figure rekindled his hope of solving the case. He went to the border city to look for the "stranger" in the video. The final showdown between good and evil begins after twenty-one years.