Shredder and Krang have enacted a new plan to induce a heatwave onto the planet in exchange for rulership of the Earth. Wouldn't you know it, Shredder's mother — a retired villain named Miyoko — decides she wants in on their plot.
Tropes:
- Amazingly Embarrassing Parents: Miyoko shows up right as the Shredder is making his demands to the world leaders on live television.
- Cardboard Prison: Shredder's mother Miyoko manages to leave the retirement home she was kept in, which is really a prison for elderly and/or retired supervillains, with only one inept guard getting in her way.
- Doting Parent: While Miyoko doesn't hold much respect for Shredder as a supervillain, she is still affectionate towards him, even when inappropriate.
- Forbidden Chekhov's Gun: Splinter gives Donatello an abacus for his trip into space, reasoning that such a low-tech tool would be handy in case of emergencies. You'd think it would come in handy later, but it never comes back, though at the end of the episode, Splinter implies its a metaphor for respecting one's elders.
- Global Warming: Shredder's big plan this episode is to accelerate the effects of global warming using Krang's technology.
- Mrs. Robinson: Miyoko has a thing for younger men, the turtles using this to their advantage by having General Yogurt charm her enough to tell him how to free them from her forcefield.
- Older and Wiser: Don't let her rude old lady schtick fool you, Miyoko knows what she's doing. She manages to trick the turtles into thinking they are farther ahead then they really are, uses Bebop and Rocksteady's ineptitude to their advantage to traps them into the Technodrome's trash-compacter and imprisons the turtles in a forcefield.
- Screw Politeness, I'm a Senior!: Miyoko has No Sense of Personal Space, bosses Shredder around as though he were still a child, and has nothing but criticisms for the Technodrome.
- Too Dumb to Live: Both the turtles and General Yogurt fall for signs left for them leading them to where they wanted to go, only to walk right into a trap.
- Villainous Lineage: It's revealed that the Shredder's mother is a retired supervillain and is more than supportive of his own villain career (if a little critical of his lack of foresight).
