The elderly Amaia has Alzheimer's and can no longer recognize Nerea, her own daughter. From her point of view, reality is distorted, and being in a confined space makes the relationship between mother and daughter unbearable.

Spain 1969. After the death of her brother, a young, dyslexic organist begins a forbidden love affair with an idealistic woman who pushes her to write a song and rebel against the highly censorious and conservative society ruled by the dictator Franco.