1951, Mexico City. After synthesizing the main component of the contraceptive pill, young scientist Luis Miramontes deals with the religious and personal consequences of his groundbreaking invention.
| Actor | Role |
|---|---|
 Jorge Adrián EspíndolaLuis Miramontes | Luis Miramontes |
| DDaniel PinteFather Alfonso | Father Alfonso |
 Azucena AcevedoLilia Vidal | Lilia Vidal |
 Emilio CuaikCarl Djerassi | Carl Djerassi |
| FFrank ForkeGeorge Rosenkranz | George Rosenkranz |
| DDiego Israel Soto OrtizLucho | Lucho |
| SScarlett Yamilet GuzmanLily | Lily |
| MMaximiliano IbarraPedro | Pedro |
| SSofia Estela DuenesPatricia | Patricia |
| LLuz Carrasco HurtadoMrs. Demetria | Mrs. Demetria |
| VVictoria FavelaWoman 1 | Woman 1 |
| HHector Daniel BursiagaNewspaper Boy | Newspaper Boy |
| MMairely Yaresi Muro MontesPoor Woman | Poor Woman |
| GGustavo Alejandro GalindoPiano Player | Piano Player |
| RRubi Amaya BeyerBus Driver | Bus Driver |
 Arturo MichelParishioner | Parishioner |
| EEric Eduarte VillaPoor man | Poor man |