Tasked with saving the princess of Gandia from the malevolent noble demon Aju, Laethreel, a youthful demon slayer, embarks on a perilous quest. Alongside her sentient and ferocious blade, Grenki, and a charming demon ally named Anshu, she delves into a journey fraught with not just monstrous adversaries but also the shadowy revelations of her own lineage.