The Ranger teens win a volleyball tournament. Rito Revolto, brother of Rita Repulsa, lands on the moon with Tenga Warrior eggs and a Vampirus egg. Rito turns gigantic and challenges the Rangers, who summon the Thunder Megazord and Tigerzord. At first the Power Rangers seem to have the upper hand, until four of Lord Zedd's old monsters (who are now more powerful than before) arrive as part of a trap. The Thunder Megazord and Tigerzord get badly damaged and start to malfunction. At the Command Center, Alpha 5 tries desperately to give extra power to the Zords, but the Morphing Grid overloads. The Rangers, having no other choice, jump out of their cockpits, hit the ground, de-morph involuntarily and watch helplessly as the Thunder Megazord and Tigerzord toss their Sabers and are both destroye