It is the year 2031. Humankind has been replaced as the dominant specieson Earth by a race of monstrous insect like creatures known as the Blue. Sleeper Yuji Kaido finds himself thrust into this nightmarish world, suddenly awakened after 22 years in suspended animation. Alone and surrounded by Blue, Yuji's only hope for survival comes the elite Sleeper Recovery Team, and a steely Mech pilot named Marlene...