Snow Demons

Big, hairy and very scary. When a Himalayan weather station is smashed to smithereens by creatures who leave super-sized footprints, suspicion falls on Abominable Snowmen. A heroic expedition braves snow-whipped precipices and discovers the dreaded humanoids. But wait - these are extraterrestrial yetis who zipped in from outer space to conquer Earth by melting the polar ice caps with high-energy proton fields. Will mankind be global-warmed into surrender?