Blackjack, Poker, Roulette, you say it and I can win the game easily. Reina Cardaisseau, the owner of Cardaisseau Company and the famous Gamble Queen. She's one of the richest person in the country but a tragedy occured when she was little. She's a passionate gambler but beside her passion for gamble, she hid her true emotion and behind her warm smile, there are hatred and revenge for her past.