Elon is a quiet, intensely insular man who works a monotonous job as a security guard at a sprawling industrial complex. His routine world completely shatters when his wife, Madalena, vanishes without a trace after leaving for her usual shift at a local clinic. Refusing to accept her sudden disappearance, Elon embarks on a desperate, obsessive search through the dark, gritty, and winding underbelly of the city. As he retraces her final steps, visiting her workplace, her friends, and nighttime urban haunts, Elon begins to uncover a series of unsettling secrets about Madalena's hidden life that he never suspected. The search slowly turns inward, blurring the lines between reality and severe psychological delusion, as Elon's desperate fixation forces him to confront the painful reality of a fading marriage, alienation, and the haunting possibility of emotional and physical infidelity within his own home.