Innato plot
Sara is a psychologist who has overcome a traumatic past as the daughter of Félix Garay, a serial killer once dubbed "the Diesel Killer" by the press. The idyllic life Sara has built with her husband, Aitor, and their teenage son, Sebas, begins to crumble when Félix is released from prison—just as a new wave of crimes seems to be repeating the murders of 25 years earlier. After years of hiding her past from her family, Sara must now work with the police to solve the new cases.