¡Biba la banda!.

In 1938, at the height of the civil war, the musicians of the military band were very worried about their next concert. Agustín receives a letter from his girlfriend, who tells him about the difficulties he is going through with the rice harvest. She then decides to ask permission to go and help her, but as Lieutenant Urquiza refuses, she escapes. Two companions sent to bring him back, finally, stay with him. Also Sergeant Perez and several musicians who go looking for him stay with them.