After being proven wrong by Master Splinter that the weapon makes the ninja, Leonardo meets a mysterious man named Oroku Saki, the leader of the Foot Clan. In spite of previous skirmishes with the clan, Leo is offered a truce and a chance to fight against a "greater evil". Almost taken in by the offer, Leo's brothers encourage him to consult Splinter, who soon informs his sons of the true nature of the Foot Clan and the significance of their emblem.

''First appearance of Oroku Saki in his Shredder suit''
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!!This episode provides examples of:

* AnAesop: Leo learns that it is not the weapon that matters, its the person who wields it.
* ArrowCatch: a version of this happens when Leonardo slices an arrow out of the air before it can harm him.
* BaitAndSwitch: This gem from Mikey when the Turtles watch Leo getting surrounded by Foot ninja.
-->'''Don:''' Thirteen to one!\\
'''Mike:''' That seems pretty unfair. [[OneManArmy I mean, there's only thirteen of them]]!
* BeQuietNudge: Don elbows Mikey when he starts [[RhetoricalQuestionBlunder honestly answering when Splinter asks him if he thinks he is "funny"]].
* BitchInSheepsClothing: Oroku Saki initially pretends to be a good guy to get Leonardo on his side, but after Master Splinter reveals his true identity to the turtles Saki drops the charade.
* ComeAlone: Saki invites Leo to a meeting, alone. Unbeknownst to Leo, his brothers follow him.
* CoolSword: Oroku Saki gives Leo a 16th century sword as a 'token of [his] sincerity'.
* FacingTheBulletsOneLiner: Yoshi's line: "He who lives without honor, will end without honor."
* {{Foreshadowing}}: This conversation between Leo and Saki hints a certain secret about the Shredder that will be revealed in the next season.
-->'''Oroku Saki:''' Your appearance is very striking. It's...\\
'''Leo:''' It's not a costume. Although I know that's hard to believe.\\
''' Oroku Saki:''' Hmm, much easier to believe than you might imagine. I have seen enough of this world to expect the extraordinary.
** Saki also mentions his enemies to Leo and his choice of wording is interesting.
--->'''Oroku Saki:''' But you must know there is a force, a corrupt and evil force, that is out there right now working its insidious tentacles into every aspect of our world.
* HeroicSacrifice: Master Yoshi dies at Shredder's claw when he refuses to divulge the Utroms' location.
* HonorBeforeReason: When Master Splinter tells the Turtles how he lost his Master Yoshi, he reveals that Yoshi was willing to die rather than give up information about his masters.
* MetronomicManMashing: Hun does this with Raphael in the rooftop battle.
* MythologyGag: Master Yoshi's FamousLastWords sound a lot like Splinter's PreMortemOneLiner to the Shredder from [[Film/TeenageMutantNinjaTurtles1990 the 1990 Live Action film]].
-->''"Death comes for us all, Oroku Saki, but something much worse comes for you. For when you die, it will be... without honor."''
** Master Splinter gives Hun his facial scars, the way he gave them to Oroku Saki himself in [[Film/TeenageMutantNinjaTurtles1990 the 1990 Live Action film]].
* RhetoricalQuestionBlunder: Mike laughs when the Turtles realize that Master Splinter is about to lecture Leo. Splinter turns his attention to Mike and asks if he thinks he is funny. Unfortunately, Mikey starts answering honestly.
-->'''Master Splinter:''' Michelangelo! Do you think I am funny?\\
'''Mike:''' [[ComicallyMissingThePoint Um, yeah! I mean sometimes.]] ''(Don facepalms)'' There was that time you told that joke about the ox and the sparrow. It wasn’t really a joke, but it was funny and-- ''[[BeQuietNudge (gets nudged by Don)]]'' Oof! I mean, no, Master Splinter.
* SecretTest: Saki sets his Foot Ninja on Leo when he arrives to test Leo's skill firsthand.
* ShoutOut: Mikey's line after Leo sneaks off to meet the Shredder:
-->'''Mikey''': [[Series/ILoveLucy Oh Leonardo, you have some 'splaining to do]]
* WithUsOrAgainstUs: The Shredder.
--> "Those who are not with me are against me! And I crush anyone who stands against me!"
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