With the help of his partner in crime best friend (Brian Cox) and crafty granddaughter, Claude (Bruce Dern) tries to reconnect with the former love of his life Lilian, who now has Alzheimer's and is living in a nearby senior community. Hopelessly in love, Claude devises a plan to enlist himself into the community and, while trying not to get caught by the staff, ingratiate himself into Lilian's life, recovering and restoring her memories of the love they once shared.