Believing that the Turtles are the only thing that stands between him and total domination of the planet, and unable to obtain him much needed Neutronium Ore, Dregg makes contact with an old ally: Medusa, a sinisterly beautiful alien. Dregg employees Medusa to eliminate the Turtles for him. So while Medusa lures the Turtles into a fight at the hydroelectric plant, Hi-Tech successfully leads the Technogangsters back to the Neutronium mine, where they are free to continue their work. Back at the plant, the mutant Carter nearly destroys the dam (which would have caused the loss of thousands of lives) and in the confusion, Medusa captures Leonardo. It seems that she intends to sell him and the other Turtles into slave labor in another part of the galaxy. Carter, now back to his normal self, blames himself for Leonardo's disappearance. He realizes he needs to spend more time training with Splinter to learn to control his mutation. The Turtles accept Medusa's ""invitation"" to meet her at the
Elenco: Cam Clarke , Barry Gordon , Townsend Coleman , Michael Gough , Pat Fraley , Tony Jay , Bill Martin , James Avery .