Winners & Sinners 3: Twinkle, Twinkle, Lucky Stars (Xia ri fu xing) (1985)

This third installment in the popular "Lucky Stars" series -- directed by Sammo Hung -- finds Muscles (Jackie Chan), Kidstuff (Hung), Fung (Yuen Biao), and the gang taking a well-needed vacation in Thailand courtesy of the Hong Kong police department. Also on the trip is police inspector Woo (Sibelle Hu Hui-chang) on orders to track down a list of drug dealers from informant Ma (Melvin Wong Kam-sun). Unfortunately, Ma gets whacked by a Thai crime lord, but he tells Woo as he draws his last breath that he mailed the list to his friend in Hong Kong. Meanwhile, Muscles and the gang are shaking down Lau (James Tien Chun), a drug dealer who, it turns out, is being targeted by the same baddies that killed Ma.