A Spanish spy must track down a former spy involved in an undercover mission decades ago, while a Colombian agent is also after him. Secrets from the past are uncovered.

Ana, a nursing assistant, begins to feel attracted to Agustín, the husband of the woman in a vegetative state that she has been hired to take care of. Soon she begins to be harassed by strange paranormal phenomena that seem to try to throw her out of the house and separate her from Agustín.