The Turtles end up smack dab in the middle of a civil war against the Foot, the Purple Dragons, and the mob as they fight for control of the city. While Leonardo believes they are responsible and must get involved to set things right, Raphael tells him it's none of their business and that they should keep out of it.
First appearance of Karai
This episode provides examples of:
- Bystander Syndrome: Raph considers the turf war someone else's problem.Raph: We shouldn't be here, it's not our fight.
[The Turtles find themselves surrounded by Foot ninjas.]
Mikey: Looks like it's our fight now.
- Chekhov's Skill: Leonardo is trying to perfect his aim with his katana by hitting the center of various bulls-eyes. Although he repeatedly fails, by the time it comes to using it in battle he hits his target.
- Enemy Civil War: the Foot Clan, the Purple Dragons and the Mob battle for control of New York following the Shredder's supposed demise.
- Evil Power Vacuum: With the Shredder gone, 3 factions are fighting for control of the city.
- How the Mighty Have Fallen: The Foot Clan is hit with this hard after the Shredders apparent demise. This is symbolized by their new base: a decrepit husk of a building with the only furniture being a couple of mats. Compare this to the Foots high-tech skyscraper from the previous season.Leo: So, this is what happened to the Foot since we got rid of the Shredder? How the mighty have fallen.
- It's All My Fault: Leo believes the Turtles, and in particular himself, are responsible for the war in the city.
- Kingpin in His Gym: Karai
- Let's You and Him Fight: The second time Leo and Raph fight against each other.
- Mob War
- Nice Job Breaking It, Hero!: Leo believes they've caused the war due to taking out the Shredder.
- Outrun the Fireball: When Leo fails to defuse the bomb.
- Reality Ensues: During the fight with the Foot Clan, Donatello attempts to emulate a scene from The Matrix Reloaded by doing a spinning kick around a virtual wall of Foot Ninja using his bo staff as leverage. The only thing that happens is him embarrassingly falling right to the ground.
- Saw It in a Movie Once: Don tries a move he's seen on TV, only for it to fail miserably in 'real life'.
- Screw the Rules, I'm Doing What's Right!: Leo goes out to help resolve the gang war, even when Master Splinter tells him not to.
- Shout-Out: In the beginning, when Raph and Leo are traversing through the city
- Time Bomb: Averted when Leo tries to defuse the bomb in the warehouse
- Was It Really Worth It?: When the building is coming down at them at the end, Raph bitterly tells Leo he hopes it was worth it "doing the right thing".
- Wrong Genre Savvy: Don tries a move he's seen on TV, only for it to fail miserably in 'real life'.