Maud, in her eighties and suffering from dementia, can't find her dear friend Elizabeth. She knows Elizabeth is missing because her phone calls go unanswered, she's never home when Maud visits, and Maud has left herself notes in her pockets and throughout the house to remind herself that Elizabeth is missing.
Maud retains the ability to recall details of her past with unfailing clarity. She often forgets what has happened five minutes ago, but constantly brings up details surrounding her sister Sukey's disappearance years ago.
Maud tries to figure out the two mysteries, Sukey's