Stella, a neglected noble with no family love or abilities and whose engagement was stolen by her sister, takes refuge in a convent. There, she rediscovers joy in cleaning—only to discover she’s developed a “Purification” ability. Paired with Prince Cecil, who possesses a destructive skill and is strangely reclusive, Stella’s cleaning transforms a cursed room, and even a beast into a fluffy holy creature. Beneath her soothing demeanor lies a hidden, potent origin and destiny.