With Christmas approaching, Charley is happy to welcome his grandson Henry-Ellis for a visit to his West Texas ranch. The boy is old enough now to travel alone by rail—but nothing can prepare him for the bullets and bloodshed waiting for him along the way. First, he witnesses a double shooting on the train. Then, he sees his grandpa gun down a dangerous duo of jewel thieves in the streets. After that, they stumble onto a train robbery in the making. But the real trouble starts when they get home for the holidays…

A scheming pair of swindlers are plotting to take over Charley's land. A vicious gang called the New Comancheros are setting up headquarters in a nearby saloon. And any hopes for peace on earth, good will toward men, are quickly going straight to hell. This Christmas, Charley Sunday is coming to town…for justice.