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!
For a time, I lost all motivation and
 was in despair over the whole world.
Había un período que estaba perdiendo 
toda esperanza y no quería hacer nada.
Durante un tiempo, perdí mi motivación
 y estaba desesperanzado con todo.
Por um tempo, eu perdi toda a motivação
 e fiquei sem esperanças no mundo.