Lily, at 76, believes she is perfectly fine. Her residence in a care facility is solely due to her husband Max’s health issues; a series of strokes has left him in a vegetative state. However, the Danish drama “Key House Mirror” gradually reveals that Lily isn’t quite the same as she once was. The film’s title alludes to a memory test. Adjusting to the home’s regulations and leaving her old ways behind proves challenging for Lily. Her life takes a turn for the better when she encounters an 80-year-old Swedish neighbor, a delightful man who provides her with the attention she has been yearning for. However, Lily’s daughter is not pleased with this developing relationship.