Rain is set in a future where the world no longer has individual leaders but one president that rules all countries. However all is not well in the world, nature is dying, the economy has plunged, people no longer have homes or food. The production industry has caused thick brown clouds of smoke to block out the sun, taking away the hope of all. 10 years after the world was united under one ruler, a girl with a broken heart and soul finds herself returning to London after enduring years of pain and suffering, living through terrible conditions and surviving against all odds only to find herself betrayed and left for dead in the back alleys of London. Fortune however favours her, and she finds herself rescued by a group of unusual people who help her to regain her will to live. Here she learns that not everything is as it seems and that the future of the world lies with her.