Christine’s first journal entry describes waking up with no memories next to a husband she does not recognize. After Ben leaves for work, she receives a call from Dr. Nash. He picks her up from the house and takes her to his office. Christine believes she has never met Dr. Nash before, but he shows her a video of them working through memory tasks. He gives her a journal to record her memories each day before she falls asleep. Dr. Nash shows Christine a photograph of a house that she recognizes as her childhood home. She remembers the interior of the house and recognizes another image as her mother. Dr. Nash explains that her childhood memories are the easiest to access.

Driving Christine home, Dr. Nash advises her to hide the journal from Ben. Christine decides she will conceal the journal in a shoebox in her wardrobe. She asks Dr. Nash to remind her about the journal each day.

That night, Christine writes in the journal while Ben is downstairs. She knows that all her memories will be gone when she wakes up.