In the small town of Salida, Colorado, on a nice, sunny afternoon, a 4000 year old Wooly Mammoth is thawed from it's icy coma in the Museum of Natural History, and escapes into the grass-filled fields of a small, near-by ranch, and wrecks havoc on the neighbors. Unaware of the situation, the ranch's owner, Nat Darvis, encounters the mammoth later that night, and keeps it as his own little secret. As the mammoth begins killing off the Nat's cattle, and the locals of the town, Nat tells the happenings to his helper on the ranch, Brady Nordon, who doesn't believe it at first. Meanwhile, the Museum's janitor and desk clerk is sent to track down the mammoth and destroy it. Requesting help from Nat and Brady, the three set off to hunt down the prehistoric creature before it finds it's way into town.