Joey is a warhorse, but he wasn't always. Once, he was a farm horse and a gentle boy named Albert was his master. Then World War I came storming through and everything changed. Albert's father sells Joey to the army where the beautiful, red-bay horse is trained to charge the enemy, drag heavy artillery, and carry wounded soldiers not much older than Albert off of battlefields.

Amongst the clamoring of guns and slogging through the cold mud, Joey wonders if the war will ever end. And if it does, will he ever find Albert again?