Agent Reyes finds herself trapped between life and death after an accident - her only hope a hospital staffer who can bridge both worlds.
At the end of a long workday, Reyes drives Doggett to his house and they share a momentary rapport before Doggett exits. Moments later, the sound of a car accident fills the air. Reyes is rushed to a hospital, where Dr. Preijers and Nurse Edwards examine her condition.
Strangely, Reyes soon finds herself inside the same hospital trauma room by herself. She makes her way to the exit, but sees nothing but a dark void surrounding the hospital. She soon encounters another patient, Steven Murdoch, who introduces her to a Mr. Barreiro, who is in the same position. A discussion ensues about whether or not they�re all dead. Reyes is convinced they�re not.
Meanwhile, Scully tells Doggett that Reyes is technically dead, but Doggett refuses to accept this. Dr. Preijers tells the agents that Reyes signed her organ donor card and surgeons will soon be harvesting her remains. In the netherworld, Reyes takes an interest in the fact that all writing in the hospital is indecipherable gibberish. She spots a figure in the hallway, but they soon vanish into thin air. Mr. Barreiro begins screaming and is suddenly engulfed in electricity. He, too, vanishes into thin air, but in a different way.
Back in the real world, Dr. Preijers comforts Mrs. Barreiro as she mourns the death of her husband. Nearby stands the mystery woman Reyes chased through the netherworld hospital earlier. Her name badge reads "Audrey Pauley".
Doggett shows an anomaly in Reyes' EKG to Dr. Preijers, then makes his way to Reyes� room, where he finds Audrey at her bedside. She tells him that Reyes�s soul isn�t gone yet.
Audrey makes her way to her room in the hospital basement, where a model of the hospital stands. It looks as if she constructed it herself. She concentrates her energy on the model and is transported into the netherworld version. There she encounters Reyes, who asks her to tell Doggett that he�s "a dog person."
Meanwhile, Nurse Edwards tells Dr. Preijers that she saw him give Reyes an injection of epinephrine, which was not mentioned in his notes. A few moments later Preijers grabs Edwards from behind and injects something into the back of her neck. A hospital staffer finds Edwards� body. In the netherworld, Reyes begins to suspect that whatever she and Murdoch are trapped in is the product of someone else�s doing. Shortly thereafter, Murdoch collapses onto the floor.
Dr. Preijers has disconnected Murdoch from life support at the request of his wife. Audrey conveys Reyes� message to Doggett, who reacts with disbelief. He follows her to her room and quizzes her about the hospital model. Audrey tells him it helps her communicate with the people in the netherworld and tells him about Murdoch and Barriero. Doggett realises that both men were Preijers� patients.
Doggett asks Audrey to convey a message to Reyes. He tells her to say goodbye, and vows to catch the man who put her on life support. But when Audrey returns to the netherworld, Reyes accuses her of creating the place she�s trapped in, which explains why she�s capable of passing between both worlds.
Preijers comes to believe that Audrey could expose him. He injects her with a drug and watches as she dies. In the netherworld, Audrey tells Reyes that the only way out is to jump into the void. Reyes takes the plunge, and awakens in her hospital bed. She speaks one word: "Audrey." Doggett rushes to the basement, where he slams Preijers into a wall and recovers the spent syringe. He then finds Audrey�s body.
When Reyes recovers, Doggett gives her a ride home. Another moment passes between them, but is ruined when Reyes is distracted by headlights from another car.