With the “War to End All Wars” looming, the life of Army “doughboy” Robert Conroy (Logan Lerman, Fury, Perks of Being a Wallflower, Percy Jackson & The Olympians) is forever changed when the little stray dog with a stubby tail wanders into his training camp, where Conroy gives his new friend a meal, a name, a family and a chance to embark on an adventure that would define a century.