Based on the legend of King Arthur and his sword, Excalibur, a boy finds himself ensnared in an evil witch's plan to prevent Arthur from claiming his birthright. He and Merlin must stop her ... Read allBased on the legend of King Arthur and his sword, Excalibur, a boy finds himself ensnared in an evil witch's plan to prevent Arthur from claiming his birthright. He and Merlin must stop her efforts to assure Arthur's ascent to the throne.Based on the legend of King Arthur and his sword, Excalibur, a boy finds himself ensnared in an evil witch's plan to prevent Arthur from claiming his birthright. He and Merlin must stop her efforts to assure Arthur's ascent to the throne.