In the past, the 34 Super Sentai defended the Earth against Space Empire Zangyakku. The soldiers of legend lost their powers during this battle, but through their sacrifice, Zangyakku was able to be repelled from the Earth.
Several years later, we meet a group of young pirates who travel aboard the ship, GoukaiGalleon. They are in search of the "Uchuu Saidai no Takara" (Greatest Treasure in the Universe). They head towards Earth, where it is said the Greatest Treasure rests.
３４のスーパー戦隊が、宇宙帝国ザンギャックを撃退した「レジェンド大戦」から数年後…。再び、ザンギャックが地球侵攻を開始！その最中、とんでもない５人が地球にやってきた。その名は海賊戦隊ゴーカイジャー！宇宙最大のお宝を探す５人の冒険が、今、始まる！！(C)石森プロ・東映
