British Army radiation drills at a remote Scottish base attract a subterranean, radioactive entity of unknown nature that vanishes, leaving two severely radiation-burned soldiers... and a "bottomless" crack in the earth. Others who meet the thing in the night suffer likewise, and with increasing severity; it seems to be able to "absorb" radiation from any source, growing bigger and bigger. What is it?? How do you destroy a thing that "feeds" on energy?
While digging a new subway line in London, a construction crew discovers first: a skeleton, then what they think is an old World War II German missle. Upon closer examination the "missle" appears to be not of this earth! This movie examines the age old question of how we came to be on this planet. It is suprizingly scary.