Kaizoku Sentai Gokaiger — Season 1, Episode 50: Day of the Deciding Battle
Action & Adventure, Sci-Fi & Fantasy, Kids • 25 min • 1 season, 51 episodes • ★ 7.5/10
Episode synopsis
Zangyack is advancing on their final plans, which includes an all out attack on the Gokaigers, and the ultimate destruction of Earth! It has been revealed that the Greatest Treasure in the Universe can, and must, be used to wipe out Zangyack's Great Fleet, completely. The Gokaigers are hesitant to do so, as the cost of the power would be the existence of the 34 senior Super Sentai...
About Kaizoku Sentai Gokaiger
A group of young pirates from space come to Earth to obtain the "Greatest Treasure in the Universe", which can only be acquired after obtaining the Ultimate Powers of the 34 Super Sentai. However, they end up running afoul of the Space Empire Zangyack, whose earlier invasion forces were wiped out by the 34 Super Sentai long ago. As a result, the space pirates use "pirate copies" of the powers of the older teams and fight the Zangyack forces as the Gokaigers.