Shintaro Kisaragi is a young guy of 18 years who is a hikikomori. He spilled soda on his computer because of that he has to leave his room to go to the world outside, locked after two years to buy a new keyboard for his computer. There he the "Mekakushi Dan" (メカクシ 団"Newsies blindfolded"), a group of young people due to various situations each have different eye skills. He realize that his younger sister is in the group to...
Kido the leader of the group notice the growth of the group as they find more people like them. "We're not alone" ... one day they went to see the founder of the group Ayano in her grave. She remember something that Ayano have that she took it after she died, a book, a short story of a monster.. But it wasn't only a book there it was Ayano's mother diary that talk about their powers. After her discover of the true that she didn't know she found a note about something terrible... That only she could stop it.