UFO

A wounded alien is captured after a flying saucer is shot down during an attack on a SHADO airborne mission.

Straker (Ed Bishop) commissions civilian test pilot Paul Foster (Michael Billington) to join SHADO as a colonel in the organization.

Straker must choose between risking everyone's life to save his young son, or stopping a downed alien spacecraft.

Aliens plan to infiltrate SHADO headquarters from a base under the ocean.

SHADO blames a private business firm's geological scanner for the disruption of visual and audio transmissions from the moon.

Foster risks his life and reputation to prove the abundant debris orbiting Earth creates potentially deadly threats to friendly vessels.