Cain von Euclid, grandson of the First King who unified the First Continent, learns from his respected grandfather that he is destined to become the strongest villain. Being unable to kill his grandson, the grandfather takes Cain on a journey to make him strong enough to overcome his fate.

For 13 years, they travel across the Second, Third, and the Fourth Continent, where Cain achieved tremendous power. Finally, Cain sets off on a lone adventure where he meets many people who influence him.

Will he be able to defy destiny and avoid becoming a villain?