A family loses their husband and father due to a violent murder in their house, in which the killer was never caught. They move away and return years later only to discover that the father's killer is living in a hidden room inside the house. Strange circumstances unfold that they can't explain, an Irish nun makes unexpected house calls and is working her way inside the house to see her daughter.

87-year-old Greek immigrant Koula Agiostratitis recounts how her husband Theo’s dementia diagnosis affected their six-decade-long marriage. Through Koula and her daughters, Vivian and Phyllis, we witness how their once music-filled home is transformed by what the family describes as “the longest goodbye.” This intimate portrait of love, caregiving and cultural duty reflects on how memory loss reverberates beyond the individual to reshape the fabric of family and culture.