Doña Pura, don Benito and don Augusto are three venerable old people who usually coincide each month in the queues of the mutuality windows to collect their pension, an opportunity they take advantage of to talk about life. When they learn that the old don Felipe, an acquaintance, is very sick and is alone and without money for a decent funeral, they decide to ask for a loan to help him, but, as they do not grant it, they decide to rob the savings bank. To do this, they will plan everything thoroughly and manufacture a homemade explosive.
| Writing | Luis Ligero | Writer |
| Writing | Rodrigo Rivero Balestia | Story |
| Writing | Juan García Atienza | Writer |
| Directing | Juan García Atienza | Director |
| Production | José Luis Dibildos | Executive Producer |
| Production | Roberto Palaggi | Line Producer |
| Production | Ricardo Sanz | Line Producer |
| Sound | Piero Umiliani | Music |
| Camera | Juan Mariné | Director of Photography |
| Editing | Alfonso Santacana | Editor |
| Art | Santiago Ontañón | Set Decoration |
| Costume & Make-Up | Manolita Castro | Assistant Makeup Artist |
| Costume & Make-Up | Emilio Puyol | Makeup Artist |
| Directing | Fernando Merino | Assistant Director |
| Directing | Michelangelo Panaro | Assistant Director |
| Art | Wolfgang Burmann | Assistant Set Decoration |
| Art | Ángel Parrondo | Property Master |
| Camera | Gianni Antinori | Camera Operator |
| Camera | Felipe López | Still Photographer |
| Camera | Félix Mirón | Camera Operator |
| Camera | Fernando Perrote | Assistant Camera |
| Costume & Make-Up | Mario Giorsi | Costumer |
| Editing | Alicia Castillo | Assistant Editor |
| Directing | Isabel Ruiz Capillas | Script Supervisor |
| Production | Isabel Ruiz Capillas | Production Secretary |
| Production | Fernando Somoza | Production Assistant |