The Slayer, River Shaw, returns to repay his brother, protecting his brother's mother and sister. He saves Iris Yale of the Yale Group and rescues his sister Wren, drawing the wrath of Underworld King Tiger Zhou. Tiger Zhou sends assassins to kill Yale Group CEOs Hazel Yale and Iris Yale to annex the Yale Group. River Shaw foils the attempt, becomes their bodyguard, and both female CEOs fall for him. River Shaw defeats Tiger Zhou and secures the Yale family.