Luz, a shy young woman, faces her worst nightmare when her friend throws her a surprise birthday party that spirals into anxiety, paranoia, and a blur between reality and her deepest fears.

Annelie, an anthropologist dedicated to mortuary rites, investigates her grandfather's suicide during the dictatorship. In a mansion that was once a production facility and later a torture center, she joins forces with a journalist and a mathematician to search for a fragment of film that her grandfather hid, which documents a crime.