Huntress (Helena Bertinelli) protects a young orphan named Harper Row from Roman Sionis/Black Mask and his henchman Victor Zsasz after she steals a disk proving Sionis's involvement in numerous crimes including the murder of her family. Batman teams up with her to stop Black Mask while Renee Montoya is building a case against Sionis with the help of Commissioner James Gordon and his partner Crispus Allen.