Chise Hatori, burdened by a troubled past and the ability to perceive supernatural beings, finds herself at a desperate crossroads that leads her to the slave market. As a rare 'Sleigh Beggy' with a powerful connection to magic, she attracts the attention of Elias Ainsworth, a peculiar magus with a beastly presence. Instead of enslaving her, he offers her an unexpected path by taking her on as both his apprentice and future bride. Transported to the enchanting English countryside where Elias resides, Chise is thrust into a realm where mythical creatures like fairies and dragons exist alongside the ordinary. Amidst this wonder, she discovers that her new existence is fraught with peril as much as wonder. The looming question remains whether she has exchanged one form of darkness for another, delving into realms beyond her imagination.