Suffering from dementia, an ailing woman finds herself at the mercy of a young live-in nurse who is out to kill her and take her life's fortune.
But dementia has given her a taste of her own medicine when she realizes the nurse is actually a hallucination of when she, herself, was a young caregiver who maliciously dismantled a helpless woman's estate.
Literally reliving her past as both victim and aggressor of her own malice, it's all coming back to her.
And it's killing her.