Without a king on the throne, Endalwynndale is ripe for the taking. While an enemy of the kingdom plots to capture his people, Oslan, the brave crown prince, learns that there is more to some of his nobles than he had originally believed. He finds himself taking up arms to travel across the ocean, where Augle, the Cyclops, lives guarding an artifact that can help him thwart the plot to end his life. Determined to save his subjects, he courageously attempts to face the giant and desperately hopes that he is cunning enough to win the vital relic that even magic cannot help him spirit away.