Not to be confused with the band of the same name that appears this episode.
Randy must find a way to juggle his life as a ninja and his friendship with Howard during the battle of the bands, while McFist tries to use a truth device that will reveal the ninja's identity during the show.
The band 30 Seconds to Math, made up of Randy and Howard, practice their song "Detention Deficit Disorder" for Battle For The Bands in the janitor's closet, then the Janitor comes in to pour old stinky fish (code orange) into the sink and tells Randy and Howard to leave the closet for a while.
Howard gets mad at Randy because, he keeps doing a NNS (Ninja No Show) when they are doing something fun like: Acrobatics, canoeing, and other fun and cool stuff. Howard starts talking about Randy doing a NNS, Randy Promises he won't do a NNS for Battle Of The Bands! When Howard left to go to The Stall Of Fame, Randy spotted some Robo-Apes outside and decides to fight them thinking that they were up to something.
The Ninja shows up and defeated the Robo-Apes, but it seems like they were only Catering the Battle of the Bands.
When he came back inside Howard chides him that he broke his promise, Randy tries to argue that he didn't. Then Howard tricks Randy by saying there's a Robo-Ape behind him and Randy turns around but there was nothing there, Howard calls him out for doing and UNNS (Unnecessary Ninja No Show) when Randy told him about the Robo-Apes. Randy asks the Ninja-Nomicon who told him that "Friendship is a weight that the Ninja cannot Carry", which he tells the Nomicon that he disagrees with.
McFist is upset that his Catering Robo-Apes were destroyed and there was no way that they could sneak in their Hypnotizing Truth Tone Gadget that can attach itself into any musical instrument and hypnotizes the music's listeners to continually tell the truth, so that the Ninja can reveal himself during the contest. Bash came in and asking money from his step father to buy a turn table, McFist immediately says no, but Viceroy uses the Truth Tone to give Bash the code for McFist's safe so that he can sneak the Truth Tone in Bash's new Turn table.
Randy apologizes to Howard during the show to get the band together, Bash during his performance destroys the turn tables without playing it, which causes McFist to order his Robo-Apes to steal Heidi Wienerman's Guitar to try and plant the device on her.
Howard overhears McFist and Viceroy's plan and stuffs his ears with cupcakes to make himself immune to the device and he proceeds to try and find Randy to get him out of there.
Randy the proceeds to fight with the robot apes letting the one carrying the guitar to run away, after his fight he meets up with Howard and they try to get out of there.
Viceroy successfully places the device in Heidi Wienerman's Guitar, she then sings "There is a Ninja inside of us", then Randy and everybody else, except Howard, Viceroy, and McFist, are hypnotized. McFist then goes over to the stage and asks for the identity of the Ninja and Randy says he's the Ninja, then Howard says that he's the ninja as well, and going with the song, he says that there is a Ninja inside all of us which causes the entire audience to say that they are the Ninja as well, foiling McFist's scheme, after that Howard goes into stage and smashes his sister's guitar and the device. Randy says to Howard that the Ninja never had a friend like him, then they proceed to perform "Detention Deficit Disorder". When they started performing, a Robo-Ape, which was dangling above the stage for quite some time, fell and made a firework-like explosion.
- Debbie Kang
- Theresa Fowler
- Bucky Hensletter
- Flute Girl
- Nameless Girl with Green Shirt
- Nameless Girl with Blue Sweater
- Nameless Boy with Red Hoodie
- Nameless Girl with Purple Sweater
- Nameless Girl with Mauve Dress
- This episode reveals that Howard and Randy have a band called 30 Seconds to Math.
- Their band name is an allusion to the band 30 Seconds to Mars.
- The code to McFist's safe was revealed to be 46234414.
- Debbie Kang and Theresa Fowler have a brief cameo in the audience next to Randy and Howard during the Battle of the Bands while hypnotized.
- One of Heidi's signatures in the Stall of Fame resembles a Walt Disney font.
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