As part of his latest plan, Krang brings General Traag to Earth from Dimension X as a distraction for the Turtles, while Krang tries to turn a laser at the ice and free the Technodrome from its prison at the North Pole. Meanwhile, Donatello learns a new fighting move, Wu Wei, where one ninja turns his opponent's attack against him without action
Michelangelo accidentally turns his brothers into five-year-olds with Donatello's "Food Rebibifier"(a machine that turns old and rotten food fresh again), while Shredder, Rocksteady, and Bebop steal weather balloons and helium tanks.
A friend of the Turtles, Kerma, is hunted down by a destroyer because of a glitch in its sensors. The destroyer was supposed to hunt down a space pirate named Nerma, but the glitch made it come out "Kerma".
Slash, the evil mutant turtle, returns to Earth from outer space with a greatly increased IQ and a raygun that turns humans into turtles. He plans to reign as Turtle Supreme, but he will have to get past the Teenage Mutant Ninja Turtles to do it.
Leonardo gets lost following a distress signal while Krang invents a "Hyper-Thruster". Krang tries to blow the Earth off its axis and melt the ice. The Technodrome is not at the bottom of the sea, but is at the North Pole
Michelangelo buys a parrot and names him Ditto, although the bird really belongs to a criminal who is after a rare key around Dido's neck because the Gulubi Ruby, the gem the thief stole, is in a vault that only the key can open.