1943. In a remote Pyrenean village under Franco’s rule, customs officer Manel Grau begins quietly helping people cross the border from Nazi-occupied France into Spain. With the help of Juliana, a courageous villager, and Jérôme, a French smuggler, what starts as a solitary act of conscience soon becomes a growing network of silent resistance.
As suspicion rises and the regime closes in, Manel finds himself drawn into an increasingly dangerous mission, one that forces him and his wife Mercè to confront the personal and political scars left by the Spanish Civil War.

Inspired by true events, Frontera is a story about moral courage, silent defiance, and the risks people are willing to take to help others, then and now.