After her 16-year-old granddaughter Verónica and her friend Mandy disappear, Isabel starts an unsanctioned investigation to uncover the truth behind their vanishing, embarking on a journey of vengeance.
Part IVerónica and Marta's families mourn their disappearance. As the police abandon their search, Isabel manages to corner the man who last saw them.
Part II
E2
Part IIIsabel deals with the aftermath of her latest discovery and decides that desperate circumstances call for a dangerous alliance with Rafael.
Part III
E3
Part IIIAntonio makes a shocking disclosure about that fateful night. As Rafael and the police draw closer to the truth, Isabel's search reaches its end.