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...
I have been defeated by your information 
gathering skills, and the Sket-dan's teamwork.
Fui derrotada por tu habilidad para recolectar 
información y el trabajo en equipo del Sket-dan.
Fui derrotada por tu habilidad para recolectar 
información y el trabajo en equipo del Sket-dan.
Fui derrotada por sua 
habilidade de colher informações