While participating in a reenactment of the Battle of Bull Run, twelve-year-old Stonewall Hinkleman is transported back to the actual Civil War battle by means of a magic bugle. Since Tom s father was a Civil War buff (though not a reenactor), it was pretty easy for Tom to imagine what life would be like for a kid who was stuck replaying the Civil War over and over again. So with Michael supplying the actual knowledge and Tom supplying the are we having fun yet attitude (and the magic bugle), they set to work. Eventually, Michael picked up on the attitude, but Tom never learned much about the war. There s been some feuding along the way, but it s a book neither of them could have written alone.