El Castillo was written and directed by Martín Benchimol, produced by Mayra Bottero, Gema Juárez Allen and Clarisa Oliveri (Argentina) and co-produced by Heidi Fleisher and Julie Paratian (France). The project participated in the WIP LATAM San Sebastián 2022 where it won the Best WIP award and was acquired by Luxbox for international sales.

El Castillo tells the story of Justina, who after having worked as a housekeeper all her life, inherits from her former employer a mansion in the middle of the Argentinian pampas. Under one condition: she must never leave. In this modern fairytale, Justina and her daughter Alexia will face the challenges of keeping that promise alive.