The story takes place in the western United States in 1897. The young man Coffey (Karl Geary) is experiencing the best time of his life-he is about to marry his beloved girl. Unfortunately, the bad news came that his fiancee's family was all killed in the attack of an unidentified object. The scene was chaotic and the death was tragic. In the face of such a cruel reality, Coffey, who was filled with grief and indignation, vowed not to give up until he found the murderer. Coffey joined the local search team and became Henry's (Doug Hutchison). At first, Coffey thought the murderer was a brutal Native American, but after some investigation, he found that this was not the case. As the investigation deepened, more and more clues emerged, but all of these clues pointed to the fact that under the land where they lived, there was a very, very terrible alien creature.