When a good knight who’s keeping watch over the kingdom from the top of a “crumbly tumbly tower” hears a “very large, very loud roar” he knows right away that it’s a dragon. What he learns, to his surprise, is that it’s a very little dragon who wants a drink of water at bedtime. Being the good knight that he is, he feels compelled to oblige. This sets up the pattern for an extremely original, funny easy reader that blends the convention of perennial bedtime requests (the first dragon has two siblings) with knightly adventures. The author’s use of repetition, word play, and a few surprises will add to the young reader’s delight, as will Jennifer Pleca’s droll watercolor illustrations showing an increasingly put‑upon knight coming to the rescue of three wide‑eyed, wide‑awake little dragons. (Ages 4‑7)