On an ordinary night in Madrid, Manuel — a young, upper-class conservative — unexpectedly runs into his ex-girlfriend Lucía outside a nightclub. What begins as a fleeting encounter unravels into a cascade of memories. The Language of the Unfaithful is an intimate, character-driven drama that explores the tension between societal expectations and the contradictions that lie beneath the surface of personal identity. Told through subtle, everyday moments, the film offers a raw and emotionally resonant look at love, loss, and self-discovery.