Yura, a 20-year-old, finds herself in a familiar world from a game after being kidnapped and regaining memories of her past life. Mistaken as a witch, she fears being the kingdom's downfall, only to discover her power is not dark magic but the ability to brew black tea. Setting up a tea shop in the knights' castle, Yura uses her tea to control demons and work towards saving the kingdom from its impending doom.