1500 years after Camelot was destroyed, Jon Emrys becomes the adopted son and apprentice of the legendary Blue wizard, Merlin Emrys, the famous advisor and father figure to King Arthur of Camelot. Jon finds out he is destined to become the Red wizard prophesized to defeat the Darkness, a being that feeds on the negativity of everything and grows more powerful every moment. Jon must travel to Europe with his friends, Leon and Thomas St. Cloud, in order to find the Philosopher's stone so they can use it to revive the wielder of Excalibur, the only known weapon that can kill the Darkness for good, and that wielder is the once and future king, Arthur Pendragon.