When they're rejected by the world leaders when they demand that Earth surrender to them, Krang and Shredder set up a massive orbiting mirror in Dimension X that causes the Earth to be engulfed in steaming heat. The heat causes the polar ice caps to start melting and also starts to evaporate all of the water on the planet.
Shredder's mother, Miyoko, hears about her son's plan from her retired home for villains and decides to join him.
The Turtles, with the help of General Yogure and a space shuttle, go to Dimension X to try and stop Krang and Shredder.
After overcoming several obstacles in the Technodrome set by Miyoko, the Turtles finally make it to the control room. General Yogure distracts Miyoko, trapping her in one of her own traps. This gives the Turtles time to destroy the orbiting mirror. The Turtles and General Yogure manage to escape Dimension X just as the portal closes, bringing them safely back to Earth.
Shredder, gets tired of his mother treating him like a baby and ships
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