Defeated on the field, her faith collapsed, the girl Karin was defeated miserably at the hands of a dark opponent, and fell into a low ebb of self-doubt. At the most frustrating moment in her life, the company of her best friend awakened her obsession. The game is not over yet and her fate is reversible. She regains her cards and uses the deck in her hand as an edge to reverse the odds and save the world.