Truck driver Jack Burton (Kurt Russell) and his friend Wang Chi (Dennis Dun) venture to the bustling San Francisco International Airport, eager to greet Wang's fiancée, Miao Yin (Suzee Pai). However, their plans take a dark turn when a notorious Chinese street gang known as the Lords of Death abducts Miao Yin with the nefarious intention of selling her into sex slavery. Driven by loyalty and determination, Jack and Wang embark on a frantic chase into the heart of Chinatown, where they unwittingly plunge into the chaos of a fierce gang battle. The conflict erupts as the Wing Kong interrupt a solemn funeral procession for the Chang Sing's slain leader.
During this tumultuous street battle, formidable sorcerers known as The Three Storms—Thunder, Rain, and Lightning—unleash their supernatural fury, resulting in a harrowing massacre of the Chang Sing. In a desperate attempt to escape, Jack inadvertently runs over their mastermind, the sinister sorcerer Lo Pan (James Hong). To their horror, it becomes evident that Lo Pan is impervious to harm, and Jack finds himself temporarily blinded by Lo Pan's eerie glowing eyes. Just when things seem bleak, Jack’s truck is stolen by the Lords of Death, forcing the duo to seek refuge at Wang's restaurant, The Dragon of the Black Pool.
Here, they encounter the tenacious lawyer Gracie Law (Kim Cattrall), Wang's ally Eddie Lee (Donald Li), and the eccentric magician Egg Shen (Victor Wong), who doubles as a local authority on Lo Pan's dark powers. Together, they devise a daring plan to infiltrate the seedy brothel where Miao Yin is presumed to be held captive. Disguised, Jack attempts to question one of the brothel’s girls, but chaos ensues as the Storms invade and whisk Miao Yin away.
Back at Gracie's apartment, Jack and Wang uncover the location of The Wing Kong Exchange, a front for Lo Pan’s ominous lair. With Wang's resourcefulness, they infiltrate the building and find themselves trapped in an elevator that fills with water. After narrowly escaping, Wang muses about being ensnared in "The hell of the upside-down sinners." Moments later, they are captured and brought before Lo Pan, who has now taken the guise of a frail elderly man. In a chilling proclamation, Lo Pan insists that Miao Yin is "safer with me than any creature on this Earth," revealing his twisted intentions to marry her.
As the tension escalates, Lo Pan's aquatic underlings swiftly capture Gracie, Eddie, and Gracie's journalist friend Margo, prompting them to devise a strategy to save Miao Yin. Wang recounts the ancient legend surrounding Lo Pan's curse, which binds him to seek a bride in order to regain his corporeal form. Seizing the opportunity, Jack and Wang manage to break free from their restraint but must quickly return to the guise of vulnerability as they prepare for the impending confrontation with Thunder, who captures Eddie.
In a dramatic showdown, Jack inadvertently shifts the course of battle, severely injuring Thunder with a well-aimed knife throw, causing the villain to inflate grotesquely in vengeance, ultimately leading to his explosive demise. With chaos enveloping them, Jack, Wang, Gracie, and Miao Yin flee into a collapsing corridor, narrowly escaping the wrath of Lightning. Thanks to Egg’s timely assistance, they find an escape route, thwarting Lightning's pursuit.
With their path cleared, the group rallies to Jack's trusty truck and speeds back to The Dragon of the Black Pearl. With Lo Pan defeated and their mission accomplished, Egg plans a much-deserved vacation, exclaiming that "China is in the heart," while Jack hits the open road. Unbeknownst to him, one of the lingering monstrous threats— a stowaway— accompanies him for the ride ahead, hinting that their adventure may not be entirely over.
