A sinister alien pirate named Divatox hatched a plan to release her fiancee Maligore from the island Muranthias on Earth. To get to the island, she needed to kidnap a wizard named Lerigot from the planet Liaria, and use his magical key. Luckily for Lerigot, he evaded capture and fled to Earth, where he sought protection from the Power Rangers.
The Rangers were practicing for a martial arts tournament. Rocky made a wrong move and ended up throwing out his back. While visiting him at the hospital, a young friend of the Rangers named Justin discovered the Rangers' identity. Zordon summoned the Rangers to protect Lerigot. Armed with Power Boxes, Tommy and Kat rescued Lerigot from the African wilderness, but they ended up losing him to Divatox later on. Divatox took the wizard to Muranthias along with other captives - Bulk, Skull, Jason, Kimberly, and Lerigot's wife and child.
Before taking off after Divatox, the Rangers were given new powers by Zordon and Alpha 5, which made them Turbo Rangers. They were joined by Justin, who took Rocky's place as the Blue Ranger. The Rangers sailed on a ship to Muranthias, where they faced the Putra Pods. Divatox arrived on the island along with her crew - Elgar, Rygog, and an army of Piranhatrons - and sacrificed Jason and Kimberly to Maligore's fire.
The Rangers reached the temple to find their friends turned evil by Maligore's flames. The team battled Jason, Kimberly, and the rest of Divatox's forces as Maligore arose from the firey pit. Lerigot restored Jason and Kimberly, and the Rangers fought Maligore with their Power Weapons. The Rangers fled, and Maligore grew into a giant. The Rangers called on their Turbo Zords and formed the Turbo Megazord, which they destroyed Maligore with.
The Rangers saved the day just in time to win the martial arts competition, as an infuriated Divatox swore vengeance on the heroes.