Simon (Simon Yam) is the boss of "Passion Island," an escapist island that produces "Passion Weed" for medicinal and/or hallucinogenic use. Simon's estranged ex-wife Joanna (Joan Chen) arrives on the island with the intention of investigating him and his mysterious purple plant for environmental violations. Chu Yu (Francis Ng) has brought his wheelchair-bound fiancee Fan Li (Song Jia) to the island to seek out thehealing properties of Passion Weed. Angry Korean Chuell Kim (Chang Chen) is on the island looking for his missing car with the help of Simon's goddaughter, travel guide Janice (Janice Man). Oddities abound as the couples fight, bond and fight some more under the purplish haze of Passion Island.