A space shuttle investigates a strange form attached to Halley's Comet, leading to a discovery of three humanoid life forms in caskets. The crew brings them back to Earth, but soon, the crew members begin to die off, and a rescue pod goes missing. It's discovered that the Space Girl is a vampire-like being that drains the life force from humans, turning them into zombies.

Lifeforce
A terrifying transformation spreads like wildfire through London, plunging the city into a catastrophic abyss of darkness and despair as an ancient threat descends upon the metropolis.