Le monde entier est placé sous la protection des six Power Rangers, les plus fabuleux super-héros de tous les temps. Mais leur ennemi Lord Zedd lance contre eux une affreuse créature du nom d'Ivan Ooze, qui les prive de leurs dons. Les forces du bien résistent et les Rangers partent pour la planète Caldron dans l'espoir d'y retrouver leurs pouvoirs.

Video release consisted of 21 season's episodes 17, 18, 19, 20. Heroic teens Troy, Noah, Emma, Gia, and Jake have defended our planet countless times as the newest generation of Power Rangers. But when evil Emperor Mavro launches his entire alien Armada in a final strike against Earth, these five best friends are called back into action! To defeat the greatest threat the galaxy has ever seen, the Megaforce will reunite with their alien friend Orion, and fight alongside over a hundred Rangers from the past - including Tommy, the original Mighty Morphin Green Ranger - in the most legendary battle in Power Ranger history!