A woman who came out of a concentration camp alive as a child, seeks revenge on the Nazis. But those who have been watching her have other plans for her.

Isabel and Lucena try to befriend Otto and his wife Ilse as the team struggles to put their plan into action before Heim arrives.

Just when Lucena seems to have gained the trust of the Bachmanns, the situation takes an unexpected and dangerous turn. Marsé opens up to Isabel about her past.

The team travels to Almería with the intention of locating Otto and Ilse and thus being able to capture Heim. Castro reveals a personal secret.

With the military on their heels, the agents risk their lives to get Heim out of the hospital ... and one of them makes a shocking confession.

While Isabel keeps him kidnapped, Heim tries to provoke her with stories of the tortures he carried out. She recalls moments lived with her new friends.