From gomanga: Twenty five years ago, the alien Givers came to Earth. They gave the human race the greatest technology ever seen--four giant towers known as Ladders that rise 36,000 miles into space and culiminate in space stations to power the entire Earth. Then, for reasons unknown, the Givers disappeared. Due to the unique alien construction of the Laddertop space stations, only a skilled crew of children can peform the maintenance necessary to keep the stations up and running. Back on Earth, competition is fierce to enter Laddertop Academy. It is an honor few students will achieve. Robbi and Azure, two eleven year old girls who are the best of friends, are candidates for entrance into the Academy. They will become entangled in a dangerous mystery that may help them solve the riddle of the Givers...if it doesn't destroy the Earth first!

Based on the novel of the same name by Orson Scott Card, in which the hopes of mankind rest on the shoulders of genius children trained to combat the impending alien threat, Shuho Sato's one-shot focuses on the story of young Ender Wiggin. From the time he was three years old, has been monitored by the military to determine whether he has what it takes to enter Battle School, a specialized school in outer space where the brightest children are trained in the intricacies of war and command. Considered to be humanity's savior, Ender struggles with the pressures of the expectations placed on him, and with his own internal struggle between his conflicting empathic and destructive capacities as a tool of war.