Teppei just transferred into Kaimei Academy, and he's pressured to join the Sket-dan by his classmate, Bossun. Then, one day, Teppei is attacked by a mysterious masked paint chucker, "Paint Mask"!
If a friend's in trouble, 
the Sket-dan will save him!
¡Si un amigo está en problemas, 
el Sket-Dan lo ayudará!
¡Si un amigo está en problemas, 
el Sket-Dan lo ayudará!
Se um amigo estiver com
 problemas, o Sket-dan vai salvar!