Two half-sisters, Cassidy and Joanna, who want nothing to do with each other find themselves forced into a union to find their father Michael (Mike) Delofante, a detective who has gone missing. Joanna, trained by a sensai, followed in her father's footsteps and became a cop but, after uncovering suspicious evidence involving her father, hunts down Cassidy to solicit aid in her search to find answers. Cassidy, who was raised on the street, is heavily involved in the underground fighting scene and Joanna believes that Cassidy may be the link to finding their father. Cassidy and Joanna will find themselves on a twin collision course to find their father, and discover a secret that may undo the threads of truth and the very world around them.