Sanshirou's chances of encountering any excitement within his island community are minimal, that is until an anonymous individual invites him to participate in a game. In a blink of an eye, he is whisked away to a world where the game of BakéGyamon is played - a competition where players battle monsters against each other. Amidst the competition, Sanshirou comes across other opponents, each with their own reasons for taking part - to attain the prize bestowed upon the winner. Unfortunately, he struggles to make headway since he has been paired with weak mud balls as his opponents.