Set in a bustling alleyway during the Japanese occupation of Shanghai in the 1940s, the film centres on a wife, Zhan Zhou, who was being charged with the bloody dismemberment of her husband – a killing that seems impossible for her to have committed alone. The murder thrusts Zhan into the spotlight and the court of public opinion, forcing her towards a fate intertwined with that of her own country.
Set in the Japanese occupation era, the rich yet naive young master Ming Tai is trained to become an agent, and is later sent to become an underground spy for the Communists. Together with his brother and double agent Ming Lou, they try and bring down Wang Wei's Kuomintang Secret Service Headquarters.