Nathaniel, an astrophysicist, finds a spaceship buried deep on the asteroid Ida, The aliens being pure energy have been trapped for 4 billion years. Nathaniel helps free them. His wife becomes pregnant although she was sterilised at puberty as was every other child. Babies have been born in baby banks for the past 300 years. Nathaniel suspects the aliens having a hand in it. Over the next 26 years 28000 babies are born worldwide, all with a slightly larger forehead like his son Michael. He suspects the aliens are trying to overtake the earth. But Nathaniel has a plan.