When their old television set finally breaks, Matt and Maggie do not know what to do until Grandmother advises them to invent things that will keep them from being bored.
Matt and Maggie's friend Fergo the gopher wants to be a circus juggler so much that he never stops practicing, and he finally gets a chance to demonstrate what he can do.
Matt and Maggie discover their grandfather's circus trunk containing a magic written incantation, which, when spoken out loud while reaching into the chest, enables them to have hands-on exploration of various careers.