After sleeping for fifty years, the enchanter Merlin awakes weak and returns to the decadent Camelot, where he finds that the Holy Grail has vanished. With the kingdom under siege by the savage Rauskaug that is helped by the evil sorceress Lady of the Lake, Merlin seeks help with the thief and aspirant sorcerer Jack to find the protection of the Holy Grail. However, he realizes that corruption has doomed Camelot.