Vanguard: A popular trading card game played by many people all over the world. Ayo Hasegawa, a normal teenager living a simple life, but when he is introduced to this awesome card game, his eyes are opened to a whole new world of possibilities. He's made new friends and had his life change for the better, but when a new darkness called the "Collapse" threatens the existence of both Planet Cray and Earth, Ayo has to step up to defend his home and the game he loves.