Wouldn't it be fun to have a dragon for a friend? But that's not going to happen if you don't know the rules. Simon's big sister, Emma, knows them all: DON'T poke a dragon when he's taking a nap; he might sneeze fire. DON'T be surprised if the dragon fries some eggs with his breath. DO be sure to wear a seat belt should you ever ride on his back . . . Simon is determined to master every last rule, because then maybe, just maybe, he'll get the chance to embark on what is sure to be the adventure of a lifetime.