Two children exchange the promise to participate in the "Why Tournament," the greatest martial arts tournament in human history. Now a young man, Maximo Onda tries to carve his destiny in the world of martial arts and fulfil his promise. Luckily an encounter with a young woman, named Gigi Sidoux, heralds the beginning of Maximo's long journey towards the fated tournament. However, standing in the way are the strongest fighters the world has to offer...