The last summer of the 20th Century. That day, the human beings learn that they are not the only ruler of the planet Earth. The appearance of the giant living creatures “Kaiju’s” and the ultimate existence that destroys all monsters: Godzilla. Through the battle against kaiju’s that lasted for half a century, human beings has experienced continuous defeat, and finally plans to escape from the Earth. And in 2048, only those who were selected by the A.I. managed under the central government boarded the inter-sidereal emigrant spaceship “Aratrum” to head for “Tau Cetus e”, the planet beyond the distance of 11.9 light-year. However, the environmental condition differences between that of the Earth and Tau e, which they finally arrived after 20 years were far beyond the predicted numbers, and was not an environment considered to be habitable by human beings.