Bilbao, 2023. a latin gang member of a youth gang is forced to participate in a santeria ritual after recovering a stash stolen by his rival gang. soon after, the young man and his little sister begin to feel the harassment of a supernatural entity. meanwhile, a social worker traumatized by her past will risk everything to help the siblings escape the fatal fate to which they seem doomed, even putting herself in danger.

1959. The charismatic French cellist Camille Bernard travels to Bilbao to give a concert, taking advantage of a moment of openness in the Franco regime. However, the concert is merely an excuse to seek answers about the whereabouts of the Althaus family, a group of German musicians who saved her life twenty years earlier.