Things get rocky at the Gravel household when paranoid Peggy Gravel (Mink Stole) and her murderous maid, Grizelda (Jean Hill), kill Peggys husband. They escape from the law, only to wind up in the crazy town of Mortville, where Queen Carlotta (Edith Massey) presides over a sleazy collection of misfits, including the vivacious Muffy St. Jacques (Liz Renay). When the queen disinherits her daughter, Princess Coo-Coo (Mary Vivian Pearce), the citizens of Mortville decide that it's time for a few changes!