Every parent who has ever struggled to get their little "superheroes" to bed will recognise what a heroic effort is required! In this funny, silly, and charming book, Mommy cow tells her three calves that it's time to go to bed. But they insist "although we look like average, normal little cows/we are secretly-SUPERCOWS!" There's just too much to do to right now, they explain, to go off to bed when the world needs them. Whether they're defending dragons from angry princesses, catching pirates, or being brave, they just can't go to bed yet! But Mommy helps them get ready for their adventures (and bed times) and lets them decide where their superhero selves are needed most.