Yamanobe-sensei is back, and now he's trying to get everyone in the Sket-dan to play a nutty board game called Hyperion. Everyone except for Himeko, as only men can appreciate this game, supposedly. But the epicness gets Bossun and Switch very enthused about the game, and soon they find themselves heading to the world tournament...
No matter what happens, Dudun-dun-dudun 
will never retreat-dun!
¡No importa lo que suceda, Dodon-don-dodon nunca dará un paso atrás-don!
¡No importa lo que suceda, Dodon-don-dodon nunca dará un paso atrás-don!
Não importa o que aconteça, o Tutun
 Tun Tutun nunca vai recuar, tun!