The Turtles get their first look at high school when April's school project draws attention from Kraang.
This episode provides examples of:
- All Your Powers Combined: Justin, the super mutant, has abilities taken from various animals, including an octopus, an electric eel, and a cobra.
- Arson, Murder, and Jaywalking: In addition to the all of the above, the super mutant inherited a cat's meowing.
- Create Your Own Villain: Justin was created by Karai when she caused all of the Kraang's harvested DNA to fuse into one monster.
- Curb-Stomp Battle: Justin does this to the turtles and the Kraang before Leo's finally able to take it down.
- Eldritch Abomination: Justin.
- Enemy Mine: Karai briefly with the turtles against the Kraang, but then subverted when she abandons the turtles to fight the Eldritch Abomination that shows up.
- Then it's the Kraang and the Turtles against said Abomination, as Raph is quick to throw in Leo's face.
- Fluffy the Terrible: Mikey calling the mishmash mutant monster "Justin", if only because his other idea wasn't good enough.
- Girly Scream: Mikey, freaking out about the cat DNA being absorbed, just before Justin is born.
- High School: For about two scenes.
- The Hyena: Bradford just can't stop laughing at Xever's mishaps with Stockman's electronic legs.
- Kick the Dog: Karai abandons the turtles to fight an Eldritch Abomination she accidentally created, which causes Leo to give up on her.
- Jerkass Has a Point: Raph tells Leo that the only reason Karai didn't attack them is because she's studying their moves.
- Jerk with a Heart of Jerk: Karai.
- Lack of Empathy: As stated above, Karai abandons the Turtles even though the Eldritch Abomination attacking them was her own fault, and when Leo points out that he trusted her, she mocks him.
- Never Trust a Trailer: The official promo for this episode shows the Turtles as they face "face their toughest decision ever"; pizza omelette or omelette pizza. There's exactly one shot of the Turtles arriving at April's school.
- The promos and the official description also don't indicate at Karai's role in the episode and the Turtles attack on the Kraang's WWGP lab.
- Nice Job Fixing It, Villain: Karai accidentally creates Justin. Leo even points out it's her fault, but she doesn't care.
- Odd Name Out: The super mutant was given the name "Justin" because Mikey couldn't think of a better name to give it.
- Trailers Always Spoil: A preview clip shows April being chased around the school by Mrs. Campbell, who turns out to be a Kraang-built gynoid.
- Red Eyes, Take Warning: Mrs. Campbell
- Revenge Before Reason: Shredder. However, he changes his tune after Karai gives him a working piece of Kraang technology.
- Robot Girl: Mrs. Campbell.
- Rousseau Was Right: Cruelly subverted. Karai abandoning the turtles to a monster she created causes Leo to give up on her.
- Shock and Awe: Justin's eyes are electrified!
- Silly Rabbit, Idealism Is for Kids!: Leo's beliefs that there was good in Karai are proven to be completely false.
Leo: I trusted you!