Yamagishi and Sendo are schoolmates, but that's about all they have in common: one is a short, no-nonsense boxer, while the other is a tall, bookish conspiracy nut. But when they find out about the creepy plant-faced monsters at their school taking over employees, it seems they'll have to set their differences aside in order to get down to the bottom of this mystery! After teaming up with the mysterious investigator Akisato, the three enter the strange and frightening world of the Beyond - a parallel dimension full of monsters and mayhem. Who (or what) lurks in the shadows on the other side? And how can they stop these paranormal pests from terrorizing their school?