Imagine a story in which the hero begins to consider himself an alien who has taken over a human body. He cannot explain why or how, but the memories he considers his own are for him memories of another world. He observes the life of earthlings not with his own eyes, and the body in which he lives does not seem to be his body. What should he do? Where is his home world? Is it possible to establish contact with this world to ask for help? For the people around him, he is mad...