A secret author of romantic adventures meets his biggest fan, and neither of them knows it. While her aunt's companion is out of town, Lady Evie Sinclair comes to stay with her, knowing her aunt is a notorious matchmaker. To be honest, she wouldn't mind falling in love if the right man appeared, but as yet, they've all been missing a mysterious something that she can't name. She fears that until she determines what that missing quality is, she has no hope of finding true love. Her aunt's doctor, Bertie Walsingham, is secretly the writer of children's books about a boy knight who slays dragons and keeps his town safe. Evie has been writing to him for a few years since she read his first book. They've grown close through the letters, but each thinks they're writing to an elderly person. Will their bond over children's literature prove to be the only love they share, or will their story find its happy ending?