The Story of Mr. Wai-Go (1998)

The film follows Hong Kong middle-aged man Ah Wei (Kent Cheng), who suffers from erectile dysfunction due to work stress and marital discord. One day, he accidentally obtains a miraculous drug called "Viagra," which restores his virility. Not only does he regain family happiness, but he also gets entangled in a series of hilarious misunderstandings and romantic encounters. Ah Wei's wife (Sandra Ng) initially suspects him of infidelity, while his friends eagerly seek the drug, triggering a chain reaction. The story humorously explores midlife crises, marital relationships, and drug abuse through lighthearted Hong Kong-style dark comedy.