It is unknown how long they have existed. Some sightings date back to 2017. But in the year 2031 Humankind was replaced as the dominant species on Earth.<br> <br> They are known only as The Blue. Many believed that the Blue were created by a rogue nation as a weapon of mass destruction. But it soon became all too evident that this was not the case. These monstrous insect-like creatures now exert their terrible will upon the planet. As a result, the remains of the human race have fled into outer space to escape the infestation of the Blue.<br> <br> Suddenly awakened after 22 years in suspended animation, Yuji Kaido finds himself thrust into a nightmarish reality. Yuji soon learns that the very survival of the entire human race rests in his hands.<br> <br> (Source: Funimation)