Fate turns the tables on mysterious Kowloon business woman Sen Loi. Her friend, Chief Inspector Barnes, is murdered and she becomes the prime suspect. To make things worse, she is accused of kidnapping a beautiful, young British socialite. With the British police on her back, she has to prove her innocence. But how can she do this when she's put under house arrest, while the police search for evidence to hang her? Sen Loi is set in Kowloon in 1939 months before World War II.