Yuuki Reiko, member of the Occult Club, barges into the Sket-dan's room holding a picture of one of Kaimei Academy's seven mysteries, the "Ghost of the Incinerator". The Sket-dan are on the case (mainly Switch), trying to find out the truth behind the picture, and getting Shimada Takako from the Newspaper Club mixed up in it, too...
Which is better? Supplying us 
with a little pocket money,
¿Qué prefieres? Ayudarnos 
con un poco de tu dinero,
¿Qué prefieres? ¿Ayudarnos 
con un poco de tu dinero,
O que é melhor?
 Nos dar um pouco de dinheiro