Laura came into conflict with her mother over visitation to see her father, Jorge, which boiled over into Laura telling her mother that she hates her, and that she wishes her to die. After saying this, Laura tried to run away, but ended up hit by a car.
As a ghost, Laura is tormented by self-recrimination and guilt at what she said to her mother. Every year she visits her mother's morgue, seeking closure but unsure of how to do so. The ghost of an old worker at the morgue, Antonio Nieves, regularly seeks to comfort her, explaining that the afterlife is very real and that ghosts often need to be listened to in order to find peace. Heeding his advice, Laura attempts to comfort the ghost of a dead boy running about the morgue, but the boy torments and scares her, prompting her to blame Antonio for giving her bad advice.
Against Antonio's advice, she rushes in to speak to her mother, who talks to herself that Laura should have listened to her, that she wouldn't have died if she did, and that she's angry with Laura. At this, Laura protests that it isn't her fault, and again tells her mother that she hates her before running away crying. She's tormented by the dead boy once again, and chased back to her mom's workroom. There, she finds the boy's father, and the boy himself is now healthy and whole, not at all scary. He embraces his father, and Antonio explains that he simply was not aware that he was a ghost.
At this, Laura realizes that Antonio is a ghost, which he confirms, and explains that she, too, is a ghost. He asks why she is so upset, and she reveals her regret at what she said to her mother. She makes amends by telling her mother she loves her, using the flickering lights to spell out a code they both knew, and her mother apologized for her actions and said she loved her forever as well. Antonio then takes Laura away, to peace.