The story takes place in an undefined future where society has reverted to a pre-industrial stage. The world is ruled by huge three-legged robots. At a certain age every child gets an implant that removes all its creativity, curiosity and passion, turning them into compliant, mellow sheep.
Before he receives his implant the hero of the story escapes with his friend (a Samweis Gamdschie-like sidekick). On their journey through the in-fact post-apocalyptic world they discover that the world was once way more advanced and that the robots are alien oppressors.