During World War II, the Nazis trampled every corner of the world. German scientists developed a super weapon of uranium fission, which could lead to the extinction of mankind. The Jewish scientist Habagou secretly took the blueprint of the super weapon out of Germany and fled to America. Hitler, who learned the news, sent the Gestapo to hunt him down. Habagou had to go to Hong Kong to meet with American agents. In order to ensure the safe handover of the blueprint code-named "Beast", China's top spy "No. 1" (played by Lin Qingxia) commissioned the private detective Ye Laixiang (played by Lin Zixiang) of the Ye Laixiang Office to escort Habagou. Ye Laixiang, who was worried about having no money to cook, thought this was a good opportunity to make money, but what awaited him was a thrilling but hilarious battle for the blueprint...