Gildo is a farmer who lives with his two daughters, Val and Genia, in the Pas Valley in the Cantabria mountain chain. Left a widower, Gildo decided to move to the valley to keep house. He milks the cows, prepares the meals for the family and looks after his young girls who still attend school. One day, one of cows strays from the farm and enters the field of his neighbour Severo. While the animal is grazing, it is covered by Severo’s bull. The two men have a long argument as to who is the rightful owner of the unborn calf and eventually thery agree it should be Severo’s. A year goes by and when young Val takes the calf to Severo, he loses his temper because he doesn’ t believe it is the calf of Gildo’s splendid cow. Blinded with rage, Severo takes the young girl hostage. Gildo, on hearing the news, runs to the aid of his daughter. The two men come to blows and the fight ends with the death of the weaker man, Severo. Val and Genia are the first to offer their condolences to Rai, Severo’s brother and heir. Between Rai and Val it is love at first sight, but Rai does not know the girl is the daughter of the man who is responsible for the death of his brother.