Només són tres

Three Republican soldiers scrape by in the trench of a dead front during the Spanish Civil War. They hardly have any supplies left, but each morning a bit of food unexpectedly appears in their rucksacks. We discover that the food is being supplied clandestinely by a solider from the pro-Franco enemy side, who comes from the same town as one of the Republicans.
In parallel, in the same place but in the present day, two children find different objects from the Civil War, unexpectedly establishing a bridge between the two points in time.