Yuji who was put into cold sleep many years ago due to an uncurable disease suddenly awakes and finds himself amist battle between humans and "blues". The Earth he sees now is no longer the same Earth he knew before he entered cold sleep and is now being manifested entirely by "Blues", an enormous bug like creature that has drove the human to near extinction. A shocked Yuji meets Marylen, a highly trained soldier who's main purpose is to bring sleepers like Yuji back back to a space station serving as humanity's last line of defense known as the "2nd Earth". Of course their attempt to return to the space station isn't a smooth one as Yuji struggles to learn how to fight for survival against "blues" and get along with Marylen who at a first glance seems like a cold blooded mercenary..... <br />