Every boy has a dream. For Yuma, his dream is to become the world's greatest duelist. But there's just one problem - his dueling skills are...well, let's just say...a little less than skillful! Although Yuma may still be learning how to duel, he more than makes up for his inexperience by feeling the flow and dueling with the passion of a pro and the attitude of an ace. That's why no matter how powerful the opponent, Yuma is always ready to take them on - even if his skills are a little off!