Michell and Amy Huff are twins. They have many things in common, like brown hair, freckles, and being in the fourth grade. On the whole, they like being twins:

     The funny part was, although he wouldn't want Amy to know, Mitchell liked being known as one of the Huff twins. "Mitchell Huff?" people would say the first time they met him. "You must be one of the Huff twins," as if being a twin was something special. And Mitchell felt that being a twin was something special. Special, but sometimes difficult ...

On the other hand, because they're not identical twins, there are also many things that they don't have in common - and that can lead to trouble! Amy is good at reading. Mitch is a math whiz. Amy likes to play pretend. Mitch would rather skateboard.

     Amy decided that being a twin was much harder on a rainy Saturday than at any other time. Mitchell could be so exasperating. By the time lunch was over, she and Mitchell were in the midst of an argument over which television program they should watch. The argument was their second that day ....

But when the school bully starts picking on Mitch, and then on Amy too, the twins are determined to put their differences aside. Can Twin-Power beat the bully?