(Synopsis credited to Ninja Turtles.com)
Donatello decides to create a clone of himself so that he can spend more time on his inventions while his clone spends more time fixing things around the Lair. Donny tests his latest invention on a sewer rat and accidentally gets his hand in the way, causing the rat clone to talk just like Donatello.
The talking rat is discovered by The Rat King and is convinced by a local hood, Pinky McFingers, that they could take over the world with Donatello's invention.
Meanwhile, Donatello turns his cloning machine on himself and, thanks to an algebraic miscalculation, creates a clone that is 10 times smarter than he is. The Clone refuses to do the work that Donatello specifically created it for. Donatello decides to put him in his place until he discovers that his Clone is also 10 times more adept in ninja skills. The Clone defeats Donatello, ties him up, locks him in a closet, and then finds himself abducted by Pinky McFingers (who double-crosses The Rat
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