The plot of Urban Reign follows the exploits "brawler-for-hire" Brad Hawk, who is hired by the scantily clad swordswoman Shun Ying Lee to find a kidnapped gang member. Brad fights his way through the street gangs of Green Harbor, a fortified city in the U.S.. As he does so to get some answers, the true machinations of the protagonists reveal themselves and things become more complicated.