Work on a building site is suspended when a skull is found. Dr Matthew Roney believes that this find is very important - a missing link in human development. Under pressure to allow building work to continue, Roney enlists the help of Professor Quatermass. Quatermass is in London fighting a loosing battle to retain control of his British Rocket Group. A metal object is discovered, believed to be an unexploded bomb. There's only one problem, the object is underneath the fragile skulls which are believed to be 5 million years old. (thetvdb.com)