After a blackout knocks out the lights in the lair, the Turtles go topside to investigate. Once above ground, the Turtles encounter the mysterious Foot Clan gathering ancient artifacts from around the city.

''First appearance of the Sword of Tengu''
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!!This episode provides examples of:

* BadassBookworm: The two Foot technicians do a fairly decent job against the turtles.
* BigBlackout: The central premise for the episode
* CoolBoard: The first time we get to see Mikey using his signature skateboard.
* {{Foreshadowing}}:
** Oroku Saki has {{sarashi}} wrapped around his abdomen [[spoiler:because that's where Ch'rell, the Utrom sits and the exo-suit has a window there]].
** Once Saki grasps the Sword of Tengu with his bare hand, he doesn't get electrocuted like Don does later on.
* HollywoodDarkness: Although the supposed darkness is a major plot point for the episode, the city really doesn't look any darker than it does in other episodes...
* KingpinInHisGym: Oroku Saki.
* NotSoAboveItAll: The Turtles enjoy some extreme sports in the sewers, then in the middle of their lair. Leo doesn't discourage any of this, in fact, he too is having fun with his brothers. When the lights go out, Leo even cracks a joke at Mike's expense.
-->''(Master Splinter lights a match and ignites a candle)''\\
'''Leo:''' Keep that flame away from Mikey! He scarfed down a whole chili pizza for dinner.
* PowerGlows: The Sword of Tengu, when in use.
* RollerbladeGood: For this show, Raph's signature urban sports gear are roller blades, which he uses even in battle.
* {{Sarashi}}: Oroku Saki has clothing wrapped around his abdomen.
* UncertainDoom: The Two Foot Technicians punished at the end. They ''did'' retrieve a valuable artifact despite failing to retrieve more, Baxter Stockman has been punished non-fatally for far greater failures, and they might be among the techs who appear in later episodes, although it's hard to tell given how they all look alike.
* YouHaveFailedMe: The two Foot technicians who told Saki that they retrieved the artifact but lost the Sword of Tengu were (rightfully) terrified in delivering the news to him. [[SubvertedTrope Surprisingly, he does not punish them.]] [[DoubleSubversion He has Hun do it for him.]]
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