In a twist of fate, Noah is transported into a world from a novel he held, 'The Heart of a Dragon,' assuming the role of the secondary character. Despite being married to the sword master, doubts cloud their love as Noah believes the master loves the novel's heroine instead. Tragically, only in death does Noah realize the truth. Overcome with regret, Noah vows to rewrite their story, determined to save their beloved from a grim fate. Swearing to protect the sword master at any cost, Noah sets out to defy destiny, even against the world's mightiest hero who shuns aid.