A nine-headed dragon ravages a coastal village, until a mysterious divine warrior slays it and vanishes. A guard captain is secretly infected by dark parasitic energy during the battle. The warrior enrolls in a knight academy's hunting trial, where a common-born candidate endures humiliation from nobles but earns a special entry due to divine resonance. After defeating a rival in duel, he is framed and sentenced to execution by holy fire. When his beloved is wounded, his godly bloodline erupts. The resurrected dragon fully possesses the captain, while a high priest sacrifices himself to reveal the warrior's true sacred identity and the possession truth. Knights unite their faith to empower him against the beast. The dragon-possessed captain is taken hostage, but the supreme god himself descends, slays the dragon, heals the land, and punishes the conspirators. Yet peace shatters as a dark lord and a fallen demigod abduct the beloved, forcing the warrior into the abyss for rescue.
