Superman embarks on a walking tour of the Battle of Westport in Kansas City, MO. The "Gettysburg of the West" was the largest Civil War battle on this side of the Mississippi, fought in one of two states that divided its loyalties and government between north and south. But as the Man of Steel reads the plaques and moves from one site to the next, he begins to feel weak, light-headed. Something drives him on, though he wishes he could stop, and feels as though his head is about to split open. When he reaches the Forest Hill Cemetery, the strange force pulls him to his knees.
When the Man of Tomorrow awakes, he finds himself thrust over a hundred years back in time! Dressed in a modified Union uniform, Superman is stationed with the northern troops as the battle of Westport begins. He knows what effects his presence might have on the timestream, and quietly refuses to engage--until he sees a Confederate soldier flying above the fray, melting Union weapons with heat vision! It's Superman Blue versus Superman Gray, with the fate of history hanging in the balance!