When a expressionless and cautious business lady travels in to a body of stupid, arrogant and man-chasing nobles, what do you think will happen? One mission, a young and stupid aristocrat falls in to water when chasing after his Royal Highness, the second prince, and loses consciousness. But when she wakes up, her gaze was not love-struck but icy cold. In a world filled with magic, how would an airhead and dumb girl like her even survive? Well soon after, the stupid girl raised to the highest as the blinding light that no one can resist. She fights along with her System as they conquer each world.