They say when two people are destined to meet they are tied together by an invisible red thread.

Ana, a poor woman, agrees to be locked in an anechoic chamber, the most silent place in the world.

The premiere in 2000 of the film "Presence of Mind" ("El celo"), a horror film starring Lauren Bacall, Sadie Frost and Harvey Keitel, augured a promising future for its director, Antoni Aloy, but after that experience the Mallorcan filmmaker disappeared from the film scene with little explanation. But what happened?

Ruben is an anodyne guy attracted by the unusual beauty of Alba, an enigmatic woman. Both live in a peculiar silent universe, with established and surrealistic rules. Ruben must break some of these rules to get Alba's attention.