After the American Army shot down a UFO in 1947, generations of elite commandos were secretly trained to deal with the aliens' feared return. However, the extra-terrestrials never came back and the elite force was disbanded. Sixty-six years after the Roswell crash, the aliens are invading Earth and only the over-the-hill retired commandos can stop them.。A white Bull Terrier named Baxter is given to an elderly woman by her daughter. As time passes, the dog develops aggressive and murderous behavior in order to be adopted by another family.。