In ancient China, twelve-year-old Junjie is chosen by his remote mountain village for a sacred and terrifying duty: to serve as the year's Wallboy-a lone sentinel posted at a forgotten outpost of the Great Wall. His mission: keep watch for signs of Mongol invaders and warn the village should danger come.
It is a courage reserved for the strongest, the most observant. Junjie is neither. He is quiet, unsure, and scared of the dark. But once chosen, he cannot refuse.
Armed with only a bow, a dog named Trina, and a belief in his father's God. Junjie must endure a year alone, facing unknowns, bitter winters, strange travelers, and the overwhelming weight of responsibility. But he soon realizes that the real threat may not be what lies beyond the Wall, but what creeps silently within his world.
This is a coming-of-age book intertwining the slow dependence on the Lord, eventually seeing God as his "own" Friend and Protector.