Senior Inspector Ho Sheung Sang (Lau Ching Wan) was called by the hostage-taking robber Ekin (Ekin Cheng) to the crime scene for negotiation. Seeing Ekin's arrogance at the scene, Ho Sheung Sang was eager to take him down, but he escaped. The setback aroused Ho Sheung Sang's fighting spirit and curiosity, and he began to play the "ransom game" with Ekin. Ho Sheung Sang received the remains of several artworks sent by Ekin. With the help of Interpol Ruby (Huang Zhuoling), he found that the damaged artworks were all insured by the same international insurance company. He guessed that Ekin intended to blackmail the insurance company, so he went to investigate. At this time, Ekin happened to call the company's senior executive Teresa (Kelly Lam) to blackmail 10 million. Ho took over the case immediately, but found that things were far from as simple as he imagined.