Zumichito has invented a revolutionary smoke machine - the Holosmoke. The Principal sees it as a new source of revenue for the school. When night falls, the Principal and Zumichito discover two undercover ninjas in the school and chase after them. The next morning the Holosmoke test run turns into a fiasco. The hologram image of a terrifying monster appears in Zumichito's place, creating wide spread panic amongst the students. Who could have sabotaged the Holosmoke? And who could have placed a love poem on Okuni's chair? Mystery... mystery...