When his ship runs aground on a strange island during a storm, Arthur sets off on his charger to look for help and meets a dwarf who tells a curious story about his son and the unicorn who has befriended them both.

A retelling of four Arthurian legends, "The Sword in the Stone," "Excalibur," "The Lady of the Lake," and "The Last Great Battle," which feature Merlin, King Arthur, and other familiar figures.