The students of Kaimei High are going on a class trip, but first, they have to participate in a rope skipping competition to see which class gets the best rooms. Saaya doesn't have an athletic bone in her body, so is worried she's going to doom her class to the worst rooms of all, until the Sket-dan tries teaching her how to skip! Then, the students are on their way, but in the back of one bus, Chuu-sensei is playing mad scientist again, and this time his victims are Bossun, Himeko, and Tsubaki!
Who cares about skipping rope?! I'm 
not a little kid. I'm done with it!
¿Qué es el salto de cuerda?
¡¿A quién le importa saltar una estúpida cuerda?!
 ¡No soy una niña pequeña, ahí os quedáis!
Quem se importa com pular corda?
 Não sou mais criança, cansei disso!