Elisa reveals a startling secret as more of Lidia's friends are endangered. Sofía turns to an old friend for help protecting the prisoners from Carmen.

An unexpected ally seeking the ultimate revenge helps Lidia try and enact her plan to free all the prisoners from the women's prison camp.

When the final phase of their escape plan is threatened, Lidia, Carlota, Marga and Óscar make a momentous decision together.