After the Wonder Twins and the Dynamic Duo find out they are not able to get rid of a tornado, the storm transports the Hall of Justice to the Land of Oz, where Mister Mxyzptlk, who has once again escaped from the Fifth Dimension, informs the Super Friends that they must find the Wizard to get home. Along the way, they encounter the Wicked Witch of the Worst Kind in a gingerbread house, who turns Aquaman into the Scarecrow, Superman into the Tin Man, and Wonder Woman into the Lion.