Young fans of not-so-obedient heroines like Olivia and Eloise will fall for the mischievous Petronilla who spreads chaos and color around the world. One day when Mrs. Gillis is giving her daughter a bath, Petronilla cries, "Wash on!" "Wash off, dear," Mrs. Gillis corrects her. But Petronilla's words seem to have power. The blue of the washcloth has stained the girl's cheek. And that is only the beginning. Colors start transferring...