Master Splinter is acting strangely, so the Turtles follow him when he leaves the Lair. But when they follow him into a different dimension things get very strange very fast...

''First appearance of Miyamoto Usagi''
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!!This episode provides examples of

* AbsurdlySharpBlade: The Gom-Tai's sickles are able to slice through Leo's katanas, and even through a whole tree trunk. Of course, despite this, Don is able to block them with his wooden bo staff.
* AnotherDimension: The Battle Nexus, the hub of the in-continuity {{Multiverse}}.
* EarlyBirdCameo: In the flashback, an unidentified rabbit stumbles onto Draco's attempt to kill Splinter and tries to save him. The next episode reveals he's [[ComicBook/UsagiYojimbo Miyamoto Usagi]].
* LockedOutOfTheFight: The Gyoji stops the Turtles from interfering in Master Splinter's match by sealing them inside a water cage.
* MagicalLand: The Battle Nexus.
* ShoutOut: Mikey says that finding out Splinter is a Battle Nexus Tournament Champion is like finding out your dad is [[ComicBook/{{Superman}} Superman]].
* TaughtByTelevision: Mikey understands the concept of a nexus between worlds. When the others stare at him in surprise he merely shrugs and says:
-->'''Mikey''': What? Donny's not the only turtle that watches ''Franchise/StarTrek'', you know.
* SoreLoser: Drako attempts to have Splinter killed after the former loses the Battle Nexus Tournament.
* TournamentArc
* WreckedWeapon: Leo's katana are sliced in half by one of the Gom-Tai.
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