In Madrid of the 20's, many women were hired as wet nurses for middle class families. Milk is paid very well, so women are turning to the honest services of Paco, glazier by trade, which completes his monthly salary getting pregnant the clients who pay for it.
| Actor | Role |
|---|---|
 Alfredo LandaPaco | Paco |
 Patrick DewaerePocapena | Pocapena |
 Christine PascalMaría | María |
 Jean BouiseAmbroise | Ambroise |
 Eduardo CalvoDon Federico | Don Federico |
 José LifanteLe médecin | Le médecin |
| RRafael DíazL'homme aux fusées | L'homme aux fusées |
 Ismael MerloMarqués | Marqués |
| JJuan LombarderoLe patron taverne | Le patron taverne |
| ÁÁngel AlcázarLe neveu | Le neveu |
| GGeorge RigaudOctavio | Octavio |
 José RiesgoPonte | Ponte |
 Emilio FornetTío de María | Tío de María |
| MMari Paz BallesterosPortera | Portera |
 Fabián CondeOrdenanza | Ordenanza |
| MMari Carmen AlvaradoMadre Chica 1ª | Madre Chica 1ª |
 Raquel DainaPuta 1ª | Puta 1ª |
| MManuela CamachoChica 1ª | Chica 1ª |
 Cristina Sánchez PascualSeñora Casa Rica | Señora Casa Rica |