Art doesn't remember anything about himself from the past. He deliberately abandoned his real self and hid under the guise of another person in order to accomplish his plan: to find the last surviving Lamp in the post-apocalyptic world and, with its help, light a fire inside the mechanical “Sun”. A strange talking artifact, which is a green sphere, will help him in this. Art will have to go from a battle with spiders to a meeting with the lord of the underworld himself. Will he remember his real self and achieve his goal?