While the Turtles work on using fragments of the Vortex Crystal to stabilize ...
Teenage Mutant Ninja Turtles
Season 10 Episode 2: The Beginning of the End
While Raphael, Michelangelo, Donatello and Carter work on restoring Leonardo to his regular self, Mung steals all the plutonium from a power plant in order for Dregg to build a Plutonium Ray to turn Leonardo into a radioactive killer.