Tang Lung is sent from Hong Kong to Rome to help a family friend, Uncle Wang, and Wang's niece Chen Ching-hua, whose restaurant is being targeted by the local mafia. The mafia boss has been trying to force them to sign a contract handing over ownership of the restaurant to him, through the use of violence and intimidation. Tang fends off the gangsters and wins Chen's admiration, who had initially looked down on him for his naïveté. Earlier on, Tang was reluctant to put all his savings into a bank and had even unknowingly gone home with a prostitute while touring Rome with Chen; he had further frustrated her by not being able to understand Italian or English. After the thugs are defeated the first time, Tang becomes friends with the other restaurant workers (who know some karate) and teaches them 'Chinese boxing'.