At the outbreak of WWII, three-year-old Caryl Hunter is evacuated from London. Her earliest memories involve living alone in Wales with her former host, now adoptive mother, Gwen. She is told she is an orphan and only child. Yet Caryl has always sensed she had a brother and, despite being told he doesn't exist and no records of him can be found, spends her adult life trying to find him. In 1995, aged fifty-nine, she discovers a photograph of herself, her birth mother and a mystery boy, standing together on a railway platform during the chaos of the evacuation operation. It reignites her dreams of finding her sibling.In 2020, in the midst of a world-wide pandemic, Caryl's daughter, Megan, takes up the search. When she, too, is confronted by an image that, for her, is unwelcome and foreshadows an inconvenient truth, she is faced with a stark choice. Acutely aware of her mother's lifelong torment, she must choose to either ignore the message hidden in the photo or reconcile the secrets of her own past.