Natori Kasumi (Ito Aoi) is a first-year student who attends Higashi Shinjuku High School on a regular basis. She doesn't like going to class and often stays in the health room. The health room teacher Sakuma (Kimura Fumino) discovered her in her communication notes.Regarding the science content written by himself, Sakuma consulted Totake (Masataka Kubota).

The content in the notes was written in imitation of a certain science fiction novel. Fujitake realized that leaving the health room was a difficult task for Kasumi, so he tried to use an experiment based on that novel to create an opportunity for Kasumi to go out..On the other hand, Sakuma becomes increasingly uneasy as Kasumi overlaps with the students he has been in contact with...