In The Queen of the Frogs by Davide Cali and illustrated by Marco Soma, there is a little pond where all the frogs live in harmony, catching and eating flies and singing their songs every night. One day, a strange object is dropped into the water---a shiny crown befitted for a king or a queen, except frogs don't have a king or a queen. But when one of the frogs is the fastest and puts the crown on, all the other frogs declare her queen. Having a queen is okay at first, but after a time the other frogs become resentful for having to do all the work for the queen. When these subjects begin to question her authority, she must prove that she's fit to rule, if she can.