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!
Why are you giving it your all to help me?
¿Por qué me ayudan con todas sus fuerzas?
¿Por qué os esforzáis tanto por ayudarme?
Por que vocês estão se esforçando
 tanto para me ajudar?