Sir Mordred™, King Arthur’s evil half brother, and his Dark Knights are determined to seize the crown from Arthur and rule the land. Their headquarters is Mordred’s Castle, a spooky hideout where Mordred and his knights hatch their evil plots. Can Mordred defend his fort from Arthur and the Knights of the Round Table or will the king and his men brave the cannons and storm the castle? In the world of Imaginext, anything is possible!