The third brother of the police scum (Lin Zhengying) swept nearly 100 million yuan worth of jewelry and fled to Japan. Although chicken bone grass (Jackie Chan) and single horn gold (Yuan Biao) were tracked and hunted, the third brother was still saved by Japanese underworld leader Matsumoto. Chicken bone grass two people are also in crisis. Due to restrictions on public image, the Hong Kong police are reluctant to use the local police force. Superintendent Cao (Cao Dahua is acted the role of) finds the criminal partridge dish that is serving a sentence (Hong Sammo is acted the role of), hope to extradite the third elder brother to Hong Kong with his strength. Partridge vegetables then gather friends from the orphanage, American ginseng (Qin Xianglin), rhinoceros skin (Feng Quanfan), Dasheng (Wu Yaohan) and Luo Hanguo (Zeng Zhiwei). Under the coercion and inducement of Superintendent Cao, the five jokes constantly embarked on a journey to Japan with the female police officer Wang Hua.