Y/n one of the best volunteers who survive the rest while the man who is named Mr. G or Gman. Gam offer Y/n a choice of freedom and money or saving others. It was then Y/n made a choice as he enters the world where he was in a Online world. It was then he was stuck here but he had lots of experience fighting and killing anything like aliens but with his weapon he will free anyone not for fame but to do what is right.