Based on the novel by Fernando Aramburu.
The show takes place in two separate time periods: 1989-90, when Joxe Mari joins ETA and Txato is murdered; and 2010-11, when the terrorist group announced they would stop violence and Bittori returns to their town.
Pablo Trapero was fired after a few weeks in pre-production. Clashed with the showrunner Aitor Gabilondo over the scripts and the cast.
Most of the actors are Basque in a story that happens in the Basque Country, about Basque historical conflicts. Nonetheless, no one speaks a full sentence in Basque! Just a few "goodbyes" and other sporadic words.