Marta has been married to Hector for so long that she barely remembers who she was before. Guided by an old manual titled How to Be a Good Wife, she keeps to routines, keeps the house spotless, and keeps her thoughts to herself.
 
But when Hector returns home with a secret, Marta’s tightly controlled world begins to crack. She experiences memory gaps, unsettling visions, and begins seeing a mysterious blonde girl that no one else seems to notice. As the line between reality and hallucination blurs, Marta must confront whether she is losing her mind — or uncovering a disturbing truth that has been buried for years.