The Sket-dan get a new assistant homeroom teacher (who wants everyone to call her, Onee-san), but she's a klutz and is upset she can't be a good role model for the students, so the Sket-dan ask Chuu-san to help with some of his strange drugs. Later, Switch goes through some old inventions of his that didn't work out as intended...
Well, you know about large 
party favor noisemakers,
Ya estarán familiarizados con los 
artículos que hacen ruidos en las fiestas
Ya estaréis familiarizados con los 
artículos que hacen ruidos en las fiestas
Bem, vocês conhecem serpentinas
 de festa de grande escala.