In order to rescue Baba Yaga and Renfield from the clutches of monster hunter Mira Starr, the Wishbone family once again transformed into vampires, Frankenstein monsters, mummies, and werewolves. With the help and encouragement of their three pet bats, our monster family once again travels the world, saving their friends, making new and terrifying acquaintances, and ultimately realizing that "no one is perfect" - even those with flaws can find happiness.