Sundown follows an elderly woman suffering from dementia, Maria, and her loving, yet exhausted caretaker, Sandra. The film focuses on their evening routine just before bedtime when Maria experiences “sundowning”: a state of confusion in the late evening lasting into the night. Their routine consists of reading from Maria’s journal, enjoying the sunset, dinner, and nightly medication. Sandra does her best to support Maria but loses patience near the end of the day as her exhaustion gets the best of her. At the peak of Sandra’s frustration, Maria confides in her that she appreciates the good care Sandra shows for her. The two share a special moment singing a lullaby just before bed.