New edition with new translation and proofreading! The Earth is in 2090 at the end! Fully exploited by the humans, the resources are already depleted and polluted air is no longer breathable. Humans live in airtight houses or in bunkers underground. Decades earlier starts a spaceship an alien race into space. The Nugu are peace-loving creatures in search of a new home. You can not believe their luck when they finally come to a perfect planet to an endless journey. The blue planet seems to be suitable for colonization. Through its green, the photosynthesis capable body, they have exactly the gift that humanity needs to survive. The alien race needs a planet and humans need air to breathe. Can the aliens still save the earth and especially the aggressive humans can tolerate intelligent beings beside him?