A team of teenagers with attitude are recruited to save Angel Grove from the evil witch, Rita Repulsa, and later, Lord Zedd, Emperor of all he sees, and their horde of monsters.

The Power Rangers return to Earth... but not like you've ever seen them before. Stationed at an underwater command base, the Rangers are now part of a super-secret Lightspeed Rescue Squad. Their mission? To battle for justice... fight against evil... and make the world a monster-free zone. Armed with the coolest, most powerful zords ever, the Power Rangers are using amazing trains, trucks and helicopters - whatever it takes - to get the job done!

Queen Bansheera is out to destroy the Power Rangers, but when her henchmen, Diabolico, joins forces with the good guys, she really goes berserk and sets out to blast the whole city away. She turns her generals into giant monsters and vows to release all of the demons of the world at the next eclipse. Soon all will be dark. Evil will win. Can the Power Rangers find a way out of the damaged Aquabase and, finally, triumph?

When the Titanium Ranger wakes to find he's been marked with a mysterious cobra tattoo, he realizes his days are numbered. Every time he morphs the cobra creeps up his body and gets closer to striking him. Ordered not to fight until a way is found to break the curse, the Titanium Ranger must sit back while the other Rangers risk it all. But Diabolico's monsters are far too powerful. The battle can't be won without the Titanium Ranger! Will he chance his own destruction to help his fellow Rangers? Can the curse be broken before it's too late? Or will Diabolico strike his final blow?

Chad eventually discovered a mermaid named Marina who Chad developed a liking to, but the Demons have plans to ruined their little relationship.