The Turtles have entered the Battle Nexus Tournament, but behind the scenes all is not well...

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!!This episode provides examples of:

* BigDamnHeroes: Leonardo is about to be killed by Drako's mooks, but he's saved by Usagi.
* BitchInSheepsClothing: The Ultimate Ninja is pretending to be friendly to the Turtles, but in reality he [[FalselyReformedVillain hasn't changed at all]].
* EvilIsPetty: The episode ends with the Ultimate Ninja shooting Leo with a poison dart. Doing so has nothing to do with his plan to usurp his father as leader of the Battle Nexus; he does it purely out of spite and wounded pride for Leo defeating them in their previous duel. Even Drako thought it was a rash idea and warned him not to.
* ILetYouWin: Splinter lets Mikey win in their battle in the tournament. Unusual in that Mikey is well aware that his sensei is forfeiting in his favour.
* MagicalLand: The Battle Nexus.
* MyGreatestFailure: Donatello has the dishonor of getting eliminated in the first tier, much to his shame and embarrassment.
* OnceDoneNeverForgotten: Don knows his brothers will never let him forget that he was the first Turtle eliminated in the tournament.
* TournamentArc
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