Set in Hong Kong at the time of the Cultural Revolution riots in 1967, Blue Lantern is a story of sex and police corruption. Mike Brodie a young police inspector from Glasgow is caught between two women. Helen is a talented and virtuous doctor, whom he can't match. Vanessa is a sordid temptress whom he finds it hard to resist. He needs more money than he earns to maintain his lifestyle, and finds himself drawn into a world of corruption and bribery.