In her tumultuous life as a professional killer, Scarlett was brutally forced to abandon her daughter Sam and flee. Years later, despite the alienation, Sam also grew to become a cold-blooded killer. After a high-stakes mission gets out of control and puts an innocent eight-year-old girl in the middle of the gang war he unleashed, Sam has no choice but to become a fraud. This eventually brings her back to her mother and her former helpers, who are joining forces in a war of revenge against those who have taken everything from them.