Zero woke up, but was told that he had lost his memory and was being hunted. He knew things he shouldn't know, and later found out that the people around him were... As events happened one after another, he was hiding a secret that he didn't even know...
The writing is a bit bad, but there are a lot of things I can't say, otherwise it will be spoiled and it won't look fun.
It's a little bit fictional and a little bit pseudo-science fiction.