A big sky Christmas

In the fall of 1873, a wagon train of immigrants sets off from Kansas City, Missouri, bound for the Montana Territory.

Leading the group is newly elected wagon master Jamie Ian MacCallister, a giant of a man and frontier legend who swears he can get them there by Christmas - come hell or high snow drifts...Plagued by brutally harsh storms and rugged terrain, outlaws and hostile Indians, the journey will be the greatest challenge these pioneers will ever face.

But when things look nearly hopeless, help arrives in the form of two unlikely saviours: an old mountain man known as Preacher and legendary frontiersman Smoke Jensen.

Two hard-willed men who believe in the settlers' dreams with all their hearts - and who will get them to their destination by Christmas.

Even if it takes a miracle...