Rodrigo, an introverted and obsessive writer, takes refuge in his imaginary world and in “brown noise,” a concentration technique that isolates him from reality. His relationship with Abril, an empathetic nurse, deteriorates as his obsession grows, leading him to falsely accuse her and, ultimately, to lose her. Although he finds the inspiration he had been searching for, he realizes that his selfishness has cost him the love of his life.