When King Richard the Lion Heart (Ian Hunter) leaves to fight in the Crusades, the evil Prince John (Claude Rains) plots with the help of the Sir Guy of Gisbourne (Basil Rathbone) to usurp the throne. Now, only Sir Robin of Locksley (Flynn), who earns the title of Robin Hood, stands with a daring band of Merry Men to defend the realm, its people and his King.