"Mona and Joey can't stop fighting! They bicker about everything, especially about who loves their favorite superhero, the Mighty Mojo, more. When the Mighty Mojo decides to pass his costume on to them, these argumentative twins fight so much that they rip it in half. Now each twin is only half as strong! Can Mona and Joey look past their differences and combine their powers? Or will they let the evil Saw-Jaw beat them, and ruin their hometown's big parade?"