Goofus and Doofus get involved in another adventure where they fight their doppelgangers that want to enslave the world to a magical artifact called the Mirrors of Stones.Goofus and Doofus get involved in another adventure where they fight their doppelgangers that want to enslave the world to a magical artifact called the Mirrors of Stones.Goofus and Doofus get involved in another adventure where they fight their doppelgangers that want to enslave the world to a magical artifact called the Mirrors of Stones.