They plan to get married in their hometown, but a quick turn of events postpones their wedding. A mysterious secret is unveiled after a young woman goes missing for several years.

Michelle Nolan had spent most of her tumultuous teenage years trying to keep her parents' failing marriage alive while acclimating herself to the rocky landscapes and winding trails of cozy Casper, Wyoming.

Now twenty-six, she's ready to tie the knot with her high school sweetheart, Tyler Bane, who's recovered from his own tribulations by carving out a successful career at a software company.

While helping Michelle seek a Mother's Day gift at a local antique store, Tyler discovers a life-sized mannequin of a Native American chief, donning a leather bracelet with a red gemstone centerpiece.

Ironically, the bracelet is identical to the one that they found left behind in a nearby abandoned house when they first began dating. Tyler had kept it with him as a souvenir. The store owner, John Harrington, is wearing one, too.

Is this just a coincidence or is there more to it?

John eventually divulges the secret. Suddenly, the world before them starts to shift. The clock is turned back several centuries, and the three find themselves standing within the vast plains that are now empty. Little do they know, the land is dominated by native tribespeople, hungry for battle with anyone who poses a threat.

Before they can soak in the wonder of the unfamiliar territory, Michelle is kidnapped by a stranger. This prompts John to reveal that he is also searching for his daughter, who disappeared years ago and was never found.

Tyler and John must think and act quickly before it's too late. Can they find the two missing women and bring them back home? Or will they forever remain lost under the shadows of the tall mountains of Laramie?

They need to hurry. Time is not on their side...