Gehrman Sparrow's life is shattered when pirates attack his peaceful coastal town, slaughtering his mother and tearing his family apart. Sold into slavery, he endures years of brutality and despair, his heart hardening into a vessel of rage and vengeance. But fate intervenes when he stumbles upon a mysterious potion that awakens powers he never dreamed possible. Consuming it, Gehrman becomes a Seer, a wielder of intuition and foresight, but the potion comes at a cost: a mutation in his mind that brings agonizing migraines, haunting voices, and a relentless pull toward darkness.
Rescued by the enigmatic Mr. Dantes, a powerful Beyonder with secrets of his own, Gehrman begins his training in divination, mysticism, and combat. Under Mr. Dantes's guidance, he learns to harness his abilities, but the voices in his head grow louder, urging him toward violence and chaos. As he navigates the treacherous path of a Beyonder, Gehrman is drawn into a shadowy world of pirates, secret societies, forbidden romance, and ancient conspiracies. He is driven by his thirst for revenge, but his quest soon uncovers a web of plots that threaten not only his and the tarot club's lives but the stability of the world itself.