As a primary school teacher and single mother to a teenage boy, Anna McCormick is more vulnerable than many to the impact of a global pandemic. But when an unstamped envelope arrives overnight, her past begins to cast its own long shadow on this already difficult present. Memories of a seismic betrayal become unavoidable, and she must face her trauma head on. Despite grappling with her demons, Anna continues to give the best of herself to the people around her, and they love her just as fiercely. With their help, as well as that of the "small kind details" still shining on despite a dark world, she begins to build the foundations of a more honest and gentle life for her and her family.