In a world of countries waging war with heroic spirits, Aralorn is constantly humiliated due to misunderstood heroic spirits' history. Percy Albert, who died exhausted after witnessing Aralorn's battlefield defeat in his past life, is reborn. Resolved to save his homeland, he enters the heroic spirits' battlefield. With wisdom and courage, Percy leads Aralorn to victory, repels invaders, and restores its glory, becoming a respected hero.