Having moved to another time, the scientist accidentally breaks the thread with his home world. This is a story about finding a way out of a seemingly stalemate, about a universal feeling of loneliness, overcoming oneself and about the mental anguish of the hero. What lengths is he willing to go to to return? What moral principles can be neglected in order to achieve a cherished goal? Not a standard model of time travel, not a common scenario and ambiguous behavior of an inventor looking for the treasured path to his home.