"Missing May" is a novel by Cynthia Rylant that tells the story of a young girl named Summer who is coping with the death of her beloved aunt, May. The story explores themes of grief, love, and the importance of family as Summer navigates her feelings and memories of May. As Summer and her friend Ob deal with their loss, they embark on a journey to find a way to connect with May's spirit. The narrative highlights the challenges of growing up and the ways in which people can find comfort and healing after a significant loss.