Tang Lung arrives in Rome to help his cousins in the restaurant business. They are being pressured to sell their property to the syndicate, who will stop at nothing to get what they want. When Tang arrives he poses a new threat to the syndicate, and they are unable to defeat him. The syndicate boss hires the best Japanese and European martial artists to fight Tang, but he easily finishes them off.

Ah Lung is a pig farmer and a devoted Bruce Lee fan who is anxious to follow in Lee's footsteps, but only ridiculed for his attempts. He is sent to the city to earn a living working at his uncle's restaurant, but when he arrives, he finds a gang of thugs causing trouble in the restaurant. He takes the chance to prove himself and attacks the thugs, defeating them and saving the restaurant. Soon, he becomes a waiter, and discovers a plot by the same thugs to kidnap a woman he works with. Eventually, he defeats the thugs once again and saves the day.

Ray is a Manila cop who travels to Hong Kong on assignment. He searches for his girl friend Lina, and finds her - addicted to drugs. Heung Lan, his ex-partner, is an undercover Hong Kong cop investigating weapons smuggling. She provokes the smugglers by intercepting several shipments in Hong Kong, leading to several good, although brief fights. The drug smuggler kills Lina, and Ray swears vengeance. The head of the gang then returns to the Philippines, and with him, the action shifts back to the Philippines. The lady cop gets more than what she hoped for.

Chicken is back in exile. Hung Hing, a triad, is trying to ally with Chicken's new group, the Taiwanese triad San Luen. A contest is on in Hong Kong. The winner will head the Causeway Bay branch.

A man returns to Japan to avenge the death of his father.

After being dumped by his fiancé, heartbroken Hong Kong police officer Fallon Zhu gains 200+ pounds. His superiors demote him to the job of escorting convicts to Japan. When a convict in his custody mysteriously dies, he must team up with citizen Thor to solve the mystery.

Old Boys: The Way of the Dragon is a bittersweet, sentimental tale of a hapless pair of amateur Chinese musicians called the Chopsticks Brothers trying, and for many years failing, to make it as musicians.