江湖上，两大门派鹰爪门和蛇形门世代敌对，双方都想将对方彻底铲除。一个月黑风高的晚上，鹰爪门突击了蛇形门，蛇形门遭到血洗，只有长老白长天（袁小田 饰）侥幸逃出。白长天为了躲避鹰爪门的追杀，隐姓埋名于市井。 　　一日，白长天被市井无赖欺负，街上武馆的打杂简福（成龙 饰）帮白长天打发走了无赖们；随后，暴露了身份的白长天遭到鹰爪门伏击，幸得简福路遇相救才捡回一条命。白长天决定传授简福蛇形拳，聪明好学的简福在学习蛇形拳后加以创新，独创了蛇形刁手。鹰爪门再次找上门，简福为了师傅挺身而出。

　　The film, directed by John McPhail (Anna and the Apocalypse), tells the story of Dinah Little, a no- nonsense, curmudgeonly farmer, and Charlie, the unloved niece who Dinah begrudgingly takes in after discovering her in an orphanage. Dinah's farm is in the self-proclaimed "Pumpkin Capital of the World" where the biggest event of the year is a high-stakes, cutthroat giant-pumpkin-growing contest with an enormous cash prize. Charlie, who has a special bond with plants, decides to enter the competition where she and the other pumpkin growers face sabotage and a genetically engineered rival. As she nurtures her pumpkin ‘Peter’ and watches him grow, so does a bond between Dinah and Charlie.

阿杰（蔡一杰 饰）、阿威（苏志威 饰）、阿智（蔡一智 饰）、阿明（黎明 饰）和克仔（李克勤 饰）是情同手足的好友，彼此之间感情十分要好。五人聚在一起打算创业，他们开了一间毛巾清洗工厂，希望能凭借着努力和智慧为自己挣得光明的未来。 　　一次偶然中，阿明和克仔结识了Yoko（周慧敏 饰）和阿猫（桑妮 饰）两个女孩，阿明和Yoko相互吸引，最终走到了一起，与此同时，阿猫和克仔之间亦碰撞出了爱情的火花。工厂的经营发生了一些问题，而Yoko亦再也无法忍受阿明的朝三暮四而选择了离开。阿猫即将移民去澳洲，她和克仔之间的感情看似不会有结果。兄弟五人都站在人生的交叉口前。

An endearing stray dog embarks on an extraordinary journey, forging unlikely friendships and overcoming obstacles.