Summary:
- The Fourth Shinobi World War was a massive conflict that involved the five major ninja villages and their allies.
- The war was started by the criminal organization Akatsuki, which was led by Madara Uchiha and Obito Uchiha.
- The war resulted in the defeat of the Akatsuki and the sealing of the Ten-Tails, the most powerful tailed beast, by the Allied Shinobi Forces.