Based on the “Queen's Blade” series of visual combat books and the PSP game, this action-packed anime series centers on a ferocious -- and often bloody -- tournament of women warriors held once every four years. Its outcome will determine who will become queen of the land. According to tradition, the strongest warrior will expand the kingdom and continue to rule the country. The contestants need only be older than 12 years; they need not be human, intelligent or even of that country. The rules for the tournament are simple: murder is allowed; and any weapon may be chosen. The winner is decided when one of the participants flees or can't move anymore. The event is broadcast through a crystal sphere by the court's magic teacher for all of the population to see and enjoy.