"Symetria" is a science fiction novel that follows the story of a group of scientists who discover a way to travel to parallel universes. As they explore these alternate realities, they come across a world where everything is perfectly symmetrical. However, they soon realize that this symmetry comes at a terrible cost. The novel delves into themes of identity, morality, and the consequences of playing with the laws of nature. As the scientists struggle to find a way back to their own universe, they must confront the ethical dilemmas that arise from their discoveries."