Back to you is the story of our main character who, for some reason, finds himself catapulted to Earth, deserted, inhospitable and hostile. He has a very specific purpose, that is to find a source of lost energy, contained in a casket that centuries earlier had been sent to Earth so that the inhabitants could benefit and use it not only as a source of energy, in fact, but as a source of aggregation and kindness towards others. Unfortunately, humans have not been able to use this energy given to them by another distant world. Our protagonist will therefore necessarily have to find it.