In 2025, the fifth year since the earth was shrouded by a dome, humans are trapped on this planet. Space equipment was forced to be discarded. Only radios can still be used. Human beings cannot escape the layer of mist shrouding the earth, species mutate, and the invasion of civilizations from other universes. Human civilization is dying. However, it is not humans who will die eventually, but you.
I, Susama, will put an end to everything.
Mission: Human civilization lasts forever