Hong Kong, 2014. A city alive with passion and shadowed by conspiracy. Yvet is a former assassin who put her old life behind her when she became the wife of the Triad leader of the Red Flower Society in Kowloon. When her husband is attacked without warning, Yvet finds herself isolated inside the very organization she joined, cut off and facing enemies she cannot yet identify. Armed with the killing skills she never truly forgot and a handful of trusted allies, she wages a solitary war against whoever is responsible.