Ruby, a 16-year-old high school student, is initially frustrated and embarrassed over having to share her room with her grandmother, Elizabeth, who has recently been diagnosed with dementia. As Ruby struggles to adjust to the changes in her living situation, she starts to notice strange behavior from her grandmother, who often seems lost in her own memories.
One day, Ruby discovers a box of old photos and letters in her grandmother's belongings, sparking her curiosity about Elizabeth's past. As she delves deeper into her grandmother's history, Ruby uncovers family secrets and learns about Elizabeth's tumultuous past, including her experiences during World War II and her struggles as a young woman.
Through these revelations, Ruby begins to develop a newfound appreciation and love for her grandmother, realizing that Elizabeth has lived a rich and meaningful life despite her current condition. As their bond grows stronger, Ruby helps her grandmother navigate through her memories and find peace in her final years.
Despite the challenges they face, Ruby and Elizabeth's relationship deepens, and Ruby comes to understand the importance of family, forgiveness, and compassion. In the end, Ruby learns valuable lessons about empathy, resilience, and the power of love in the face of adversity.