Secrets of the Past is part of series of children's books about a little girl befriended by a magic pegasus. In Secrets of the Past, Cassie's best friend Andrew asks if Mekore will take him to the Land of Eternal Time also but he needs a steed to ride. When the toss of fairy dust produces a black pegasus instead of a dragon, Andrew is disappointed but then learns that sometimes we don't get what we want because we don't know what is best for us. Each "dragon" they encounter turns out to be a dinosaur and Mekore explains that dragons are mythical beasts in fairytales whereas dinosaurs really lived many years ago.