Starwatch (1988)

Starwatch - A Glimpse of Things To Come (1988) | Promo starring Jon Pertwee

In the late 21st century, planet Earth is suffering. Deep under Stonehenge lies a giant crystal - our world's Sentinel, which regulates the conditions for life. Throughtout the universe are many such Sentinels, each relaying information in the cosmic network of stability. But the relay point for ours is malfunctioning....