Young Master (Nicholas Tse) and Brad (Nick Cheung) are small time cops with big dreams – to become members of the respected Gold Shield Constables. When a major murder robbery case arrives on their doorsteps, their investigative skills raise the suspicions of investigator Captain Iron (Kenny Ho). Wrongfully imprisoned, Young Master and Brad escape execution thanks to the help of two beautiful swindlers (Crystal Huang and Charlene Choi). To retrieve the precious statue stolen from the murder scene and arrest the band of murderers, the heroes go to Treasure Inn, where they expect an annual auction of artifacts to attract the murders mastermind. There, they meet inn owner Yue Linglong (Liu Yang), a mysterious scholar (Tong Da Wei), and other assorted shady characters that have arrived at the inn for the auction.