In the upcoming episode of La Promesa titled Avance ‘Sueños de libertad’, capítulo lunes 16 de diciembre: la verdad de Fina y una falsa tregua, the emotional turmoil deepens. Digna accepts a secret meeting with Pedro, while Fina opens up to Marta about her harrowing past, and Begoña confronts Andrés, whose betrayal becomes impossible to forgive.

The episode begins with Begoña confronting Andrés in the mansion. After he pleads for forgiveness, Begoña’s cold response reveals the depths of his betrayal, especially the fact that he slept with María. As Begoña distances herself, she reaffirms her commitment to Julia, and Andrés realizes he has lost her for good. Meanwhile, in the countryside, Fina struggles to keep her traumatic past hidden from Marta. Despite Marta’s attempts to comfort her, Fina refuses to reveal the truth about Santiago’s assault. Fina’s emotional isolation is palpable, and Marta is left heartbroken, unsure of how to help.

Elsewhere, María manipulates Gema into confirming her version of events regarding Andrés and Begoña’s confrontation. Gema, though uncomfortable, finds herself trapped in María’s web of lies. The episode also shows Fina finding the courage to share her darkest secret with Carmen—Santiago tried to assault her once more before her release. This revelation brings Fina to a breaking point, and she finally opens up to Marta. Their emotional exchange marks a turning point in their relationship, as Marta promises to stand by her and fight for justice.

Meanwhile, a simmering romance unfolds between Digna and Pedro, whose shared moment of intimacy sparks a new, complicated connection. As the episode reaches its climax, Begoña contemplates a fragile truce with Jesús for the sake of their daughter Julia, despite her emotional distance. The episode ends with Fina taking a crucial step toward healing, deciding to face her trauma and confront Santiago’s actions head-on, with Marta by her side.