The Ultimate Ninja is trying to take over the Battle Nexus, and Leo, Don, Splinter and Usagi are doing everything they can to stop him. Meanwhile, the Tournament continues...

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!!This episode provides examples of:
* AssumedWin: Raphael thought he could beat Michelangelo, intending to use their matchup as a means to payback past grievances. It didn't go as planned.
* CallBack: [[Recap/TeenageMutantNinjaTurtles2003S1E4MeetCaseyJones Once again]], Mike defeats Raph in a fair fight.
* CurbstompBattle: Mikey vs. Raph, in Mikey’s favor.
* DrowningMySorrows: Raph goes into this with Traximus after his loss by Mikey.
* HeroicBSOD: Raphael after getting beaten by Michaelangelo, then realizing he has a chance of winning the whole tournament.
-->'''Raphael:''' I don't believe it! Mikey beat me! He’s in the final four!? And I’m out!? What if... what if... WHAT IF MIKEY ACTUALLY WINS!?!? What if he becomes the Battle Nexus Champion!? He’ll never let me live it down! AND I’LL NEVER BE ABLE TO LIVE WITH MYSELF!!!!!
* IShallTauntYou:
-->'''Michelangelo:''' Hear that crowd, Bro? That’s ME they’re cheering for! That’s right, me! Not you, but me! Not you, but me! ''([[CoincidentalDodge jokingly takes a bow which ducks under Raphael’s flying kick, causing him to crash]])'' Okay, now you’re just getting sloppy.
-->'''Raphael:''' [[PunctuatedForEmphasis Will... you... shut... your... trap!?]]
-->'''Michelangelo:''' Why? Does my talking bother you? ''(dodge)'' Am I distracting you somehow? ''(dodge)'' Making you lose focus? ''(dodge)'' Messing up your concentration? Finally getting on your nerves, perhaps? Or maybe you're just a teeeensy bit worried that I might actually ''beat you''.
* MagicalLand: The Battle Nexus
* SpitTake: Raphael does it ''in his own drink'' when Traximus mentions about Splinter being an assassin trying to kill the Daimyo.
* TournamentArc
* YouCanSayThatAgain: Donatello says this to Usagi, and gets the expected response.
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