Avery, Ella, and Sadie Hope-three stair-step sisters-visit Paris and stay at the oh so elegant Hotel Le Meurice with their grandmother, Mimi, and grandfather, Papa. Why do the girls NOT want to go the Louvre? Not even the Eiffel Tower? Not even (aghast) to ride the Tuileries carousel or go shopping?! Because they have a new passion moustaches, of all things! Not only do they create them, they actually wear them as well as tease, taunt, and (dare I say it?) SHOCK the staff with their upper lip antics! Where do all these moustache shenanigans lead? Mais oui! You just won't believe!!!!