Hoping to put to rest years of unease concerning a past case, retired criminal investigator Benjamín Espósito (Ricardo Darín) begins writing a novel based on the decades-old unsolved mystery of a newlywed's rape and murder. With the help of a former colleague, Judge Irene Menéndez Hastings (Soledad Villamil), Benjamín attempts to make sense of the past. The journey through his memories sets Benjamín on a thrilling emotional path that leads to a shocking realization.