The climate of the earth has changed for the worse since the great war. Haruka and her robot companions are on the run from a colossal tsunami that will destroy everything. The discovery of a dormant spacecraft provides an escape route from the oncoming threat. Forgotten secrets of Haruka's parents resurface and test her will to go on. New mysteries crop up with the discovery of a young boy named Kanoto! Who is he and where did he come from?