As the "Fighting Chance" arc continues, Captain America battles both external enemies and his own deteriorating physical condition. The super-soldier serum in his body is breaking down, leaving him vulnerable and forcing him to fight smarter rather than harder. In Enemy Fire, Cap faces off against the urban terrorist group known as the Watchdogs, while his allies worry about his declining health. The stakes rise when a former enemy reemerges, testing Cap’s limits in a city under siege.