Based on a true story. In the 70s, during the last stages of Franco's dictatorship, Txema, a basque construction worker, is arrested because of his connection to some terrorists who have just committed a murder. The secret service see in him an ideal candidate to infiltrate the terrorist band ETA and become a mole, so they try to offer him a deal if he will do so.
The thirteen survivors of a catastrophe by a tunnel's collapse tries to balance their experience trapped along 15 days inside it with their day-by-day outside it.
Rafael, a lonely 40-something butcher, saves a pregnant Marina from an assault by her boyfriend Daniel. Rafael agrees to take Marina in and they happily raise the child together. Years later, Daniel re-enters their lives and turns them upside down.
