Seeking revenge for the murder of his family, a man returns to Hong Kong to track down the killers. He becomes enthralled in further intrigue when his new boss is targeted by the same group.

Iron Bridge Monkey is 10th generation of O Mei section, in order to protect the national treasure – Jade Watermelon, he lives at Tien Ho town secretly and disguises as a time announcer. General Chang intends to find it and sell to a foreigner. When his real identity is exposed, he has to run away. Who will finally get the Jade Watermelon remains a puzzle…

Meng Fei stars as a fighter-for-hire who seeks the jade statuette for an unidentified employer. Hu Chin plays the sexy femme fatale, Madame Pearl, who runs the local brothel, seemingly the center of the town's commercial life. Chi Kuan-Chun plays Wu Kang, the town boss, who is involved romantically with Madame Pearl and protects the brothel. Madame Pearl is in league with the bandits who stole the jade and is waiting for them to arrive in town. The very pretty Kitty Meng Chui plays a prostitute who becomes an ally of Meng Fei. Mysterious characters abound, including one elegant fellow who has the habit of placing a single rose on the bodies of fight victims, saying, "Even the dead love roses." Many other familiar faces are on hand as well.

Peter YANG, an orphan, works very hard to support his younger brother Larry. Unfortunately, having his investment lost in the stock market, he is forced to borrow money from a loan shark named Paul CHOW at very high interest rates. To pay back the loan, he turns to gambling. Larry is admired by Helen CHUNG, who soon becomes his close and intimate friend. Peter, meanwhile, wins a considerable sum of money with the help of Bobby CHU, a skillful and honest gambler. This infuriates Tommy CHAO, a ruthless gambler, who secretly tries to attack Peter and his fiancee, Lily. Failing in his attempt, he cheats Peter at the gambling table. Unable to pay his debt, Peter reluctantly accepts Tommy’s conditions and agrees to set up a game to cheat the Tycoon Henry CHUNG of his money.

Peter LAN, a handsome man and a seasoned gambler, finds upon his return from abroad that his family has been destroyed by the treachery of the unscrupulous Alfred WONG, who cheated Peter’s father out of his fortune and drove him to suicide. With both his mother and father dead, Peter suspects and decides to collect evidence of Alfred’s crime. While trying to track down the villain, Peter meets Barry SUNG, a businessman and playboy working for Rex HU. Barry, the would-be gambler, and Peter quickly become friends during a gambling session. The beautiful Lily, who loves Peter devotedly, provides the hero with the crucial lead when she takes him to visit Rex, Barry’s boss. When Rex orders Barry to kill his new friend, his cover is blown. Rex HU is actually Alfred WONG, the man who destroyed Peter’s family. During the dramatic and violent showdown, Barry sides with Peter and helps to bring Rex to justice.

Hong Kong movie