Aliens in Woodford (Sam: Dog Detective)

Strange things are going on at Woodford's old abandoned airfield -- transport trucks rumbling through the gates in the middle of the night, unexplained lights bobbing up and down and security guards who seem to possess superhuman strength. Sam the sheepdog is certain an alien invasion is about to happen. Were those missing neighborhood pets beamed up into a UFO? Is Sam next? Can Jennie and her best friend, Beth, rescue Sam from a fate worse than eating dog food?