Tension between the USSR and the West is at it’s peak, when a large asteroid appears in the solar system following a huge burst of energy.
An American expedition is first to reach the object, and discovers massive chambers within. Each containing scientific wonders beyond belief, but devoid of any life.
However the last chamber contains the biggest mystery of all. It appears to go on forever.
As the threat of nuclear war seems inevitable, the expedition struggles to understand where this magnificent artifact came from, and how it may be linked to Earths future.