In Mexico City, during a visit to their patriarchal grandparents' house, rebellious seven-year-old Lucía and her siblings will stumble upon something that will change their lives forever: their grandfather's revolver.
| Actor | Role |
|---|---|
 Sal LopezAbuelo | Abuelo |
 Gloria LainoAbuela | Abuela |
| EEmilia Phoenix CaroLucia | Lucia |
 Patricia De LeonMamá (Gloria) | Mamá (Gloria) |
 Al CoronelPapá (Mauricio) | Papá (Mauricio) |
| SSienna OquendoAndrea | Andrea |
| EEthan CorderoSantiago | Santiago |
| RRosamariaRosita | Rosita |