Mercedes is an exhausted woman who faces the non-return of her only son, after the end of the Chaco War in 1935. A soldier returns to the same town looking for his girlfriend, and ends up accompanying this woman, discovering in turn the reason for her suffering.
Unfortunately the movie Birthday is not yet available on HBO Max.
| Directing | Rubén Aguilera | Director |
| Production | Noemí Baruja | Production Coordinator |
| Directing | Ivo Rehnfeldt | Assistant Director |
| Camera | José Martínez | Director of Photography |
| Editing | Cristhian Aguilera | Editor |
| Writing | Rubén Aguilera | Author |
