The creation of Ninja-Gum, a substance that awakens dormant power, leads three researchers to the mysterious Ninjala Tournament.

The year is 20XX. The ninja, who once forged the history of Japan, were scattered across the country during the Meiji Restoration. As these ninja mingled with the other clans, their bloodline thinned, and they gradually faded from sight. The descendants of these ninja clans, seeking to preserve their heritage, formed the WNA (World Ninja Association) in the hope of carrying on their legacy. And so it was that the WNA succeeded in developing Ninja-Gum, an art which could summon forth the strength of the Shinobi. And yet creating the most powerful Ninja-Gum requires the strongest of ninja DNA. So it was that the Ninjala Tournament was held, that the mightiest of all ninjas could be found.

Ninjala is an anime television series based on the video game of the same name. It follows an 8-character main cast of Van, Berecca, Ron, Lucy, Burton, Emma, Kappei, and Jane as they attend WNA Academy and go on missions as ninjas. A long time ago, a meteorite fell upon a country. Before long, people with special gifts emerged there. They were called Ninja. In a lawless age, Ninja served feudal lords. They were sent on various missions centered around intelligence. But over time, as a new age arrived... Ninjas were not needed any longer. Expelled, they crossed the sea and were scattered all over the world. And today... some of those Ninjas' descendants are here.—Ninjala Wiki