Two years after the disappearance of Verónica and Marta, two 16-year-old friends, the investigation is declared closed due to lack of evidence and suspects. The grandmother of one of the two girls, Isabel, who has nothing to lose, decides to carry out an investigation beyond the law. Isabel will do whatever it takes to uncover the truth about what happened that night and what begins as the search for a culprit, soon becomes a story of revenge.