Lord Zedd took over Rita Repulsa's moon palace and locks Rita up in the space dumpster again and then he sent Pirantishead to attack the Power Rangers. The Rangers tried everything they had to defeat Pirantishead, but he was too strong and powerful.Pirantishead goes and destroy the Dinozords staring with the Tyrannosaurus.
Pirantishead froze the Tyrannosaurus Dinozord and smashed it to pieces, ejecting Jason the Red Ranger and making him loose his powers. Then Pirantishead goes and tossed the Saber-Toothed Tiger Dinozord into a mountain, ejecting Trini the Yellow Ranger and making her loose her powers.
Then Pirantishead grabbed the Triceratops Dinozord and shoved it into the ground, ejecting Billy the Blue Ranger and making him loose his powers.Then Pirantishead destroys the Pterodactyl and Mastodon Dinozord and the Dragonzord as well by creating an earthquake sending the three Zord back into the Earth.
Kimberly the Pink Ranger and Zack the Black Ranger both lost their powers, Tommy the Green Ranger already had his powers taken away by Rita Repulsa.
Alpha 5 found the powerless teenagers laying on the ground and took them back to the Command Center.
Zordon told the Rangers "Lord Zedd is more powerful than Rita Repulsa, so you need a new source of power".
Alpha 5 found the destroyed Power Coins and melted them down to make new coins with power drawn from five mythological creatures.
Zordon said to the Rangers "behold, your new thunder powers drawn from five mythological creatures",
"Zack, you will be the new Green Ranger, with powers of illusion and your mighty Lion Thunderzord".
"Kimberly, you will have the powers of wind and the Firebird will be your Thunderzord".
"Trini, the powers of time are yours and the Griffin will your Thunderzord".
"Billy, you have the Unicorn Thunderzord with the powers of Earth".
"And Jason, you have the most important Thunderzord, the Red Dragon Thunderzord with the powers of fire, it can transform to its own mighty warrior for single Zord combat"
"When you combine the Red Dragon, Griffin, Unicorn, Firebird, and Lion Thunderzord you will a new and more powerful Thunder Megazord".
Zordon continued on "with these new thunder powers, you'll have new suits and helmets based on your Thunderzord and also new weapons to fight the evils of Lord Zedd".
"And now Rangers, I present to you your new weapons".
"You now have two sidearms, a small dagger called the Thunder Blade the Thunder Blade can also be used call upon your Thunderzord, and a longsword called the Thunder Sword, these two weapons can combine to form the Super Thunder Blaster".
"These are your new personal weapons, Red Ranger's Thunder Katanas, Yellow Ranger's Thunder Whip, Blue Ranger's Thunder Nunchucks, Pink Ranger's Thunder Spear, and Green Ranger's Lion Staff".
After Zordon gave the Rangers their new Thunder powers the Rangers went back to fight Pirantishead with their new Thunderzords.
The Thunderzord were more powerful than the Dinozords and they've combined to form the Thunder Megazord.
The Thunder Megazord waved it giant sword and destroyed Pirantishead once and for all.
But the Rangers' troubles were only just beginning Lord Zedd created more powerful Putties called Z-Putties.
The Rangers' morphing call went like this "Lion, Firebird, Unicorn, Griffin, Red Dragon".
Alpha 5 knew they needed a sixth Ranger, so Alpha 5 and Zordon created a new Ranger out of white light nobody knew who this White Ranger was.
The White Ranger had his own Zord, the Tigerzord which combine with the Thunderzords to form Mega Tigerzord and he has a talking sword named Saba.
The Rangers' soon found out who was the White Ranger and he was no other than the former Green Ranger, Tommy Oliver.
Jason, Trini, and Zack decided to retire from their Power Ranger duties and Alpha 5 and Zordon had to find replacements for the departed Rangers.
It wasn't long before Alpha 5 and Zordon found three new Rangers and introduced them to Billy, Kimberly, and Tommy.
Their names were Adam the Green Ranger, Rocky the Red Ranger, and Aisha the Yellow Ranger.
Meanwhile on the Moon, Lord Zedd was busy creating new and even more powerful monsters and he revealed his own Zord, a green dragon-like zord named Serpentera. The Ranger needed another Zord to fight the more powerful monsters as well as Serpentera.
Alpha 5 found a mysterious green gem that was glowing near where Titanus the Carrierzord remained dormant and the gem transformed Titnaus into a turtle-like Zord and Alpha 5 said "I should name you Tor the Shuttlezord".
Tor can combine with the Thunderzord and the Tigerzord to form the Thunder Ultrazord.
Lord Zedd decided to free Rita Repulsa from her space dumpster and use a love potion to get Rita to marry him.
Then a mysterious egg was found at a construction site and Lord Zedd and Rita Repaulsa cracked the egg, but only to find glowing purple ooze.
The ooze form a new villan, Ivan Ooze and when he saw the Rangers he sent out his Ooze Men to attack them.
Ivan Ooze has two Zords of his own, a hornet-like Zord named Horntor and scorpion-like Zord named Scorpitor.
The Rangers tried all thier power aganst Ivan Ooze, but Ivan Ooze goes off and destroys the Thunderzord making the Rangers loose thier thunder powers.
The powerless teenagers go on a quest for a source of power.