After three years, María gets out of prison and has to face reinsertion. She tries to fulfill a promise she made to one of her prison mates, whatever it takes.
María is faced with prejudice and mistrust among those who discover she was in prison. She tries to fulfill her promise to Santa, but her daughter Yasmín won't make it easy and forces María to make a difficult decision.
In one last attempt to be social, María attends a big party. In an attempt to be accepted, she makes a bad decision that humiliates her in front of everyone. She also receives a devastating call from Santa.
After a few weeks, María finds a job at the Tunnel of Terror at Parque de Atracciones de Madrid. However, she has to choose between her promise and her reinsertion. She turns to Gabriel for help.
A wild road trip drags María down and leaves her with no chance at salvation. A mouthful of faith fills her heart again and she sees a sign to find Yasmín and fulfill her promise.
Sweaty, desperate and with no exchange clothes or money, María arrives to Torrevieja, wanting to fulfill her promise once and for all. Various unexpected conversations finally bring her back to reality.