Altered is an American horror film that was released in 2006. Five friends find themselves abducted by aliens while hunting together in the woods. After being tortured and examined before finally being released again, they realize that one of their friends did not survive the process. Fifteen years later, the four friends manage to capture one of the very same creatures that tormented them. Taking the creature deep into the woods, they intend to exact their revenge for fifteen years of horrifying memories, their pain on that fateful night, and most of all, for their lost friend. The four eventually realize they are in a difficult position. They cannot set the creature free as it will be certain death for them, however, they cannot kill the creature either for the same reasons. As their resolve begins to weaken and confusion sets in, the alien is trying everything it can think of to escape the men.