Astrophysicists discover a large dark cloud heading towards the centre of our solar system. Alarmed at the effects the cloud may have on Earth, countries around the world hastily set up a combined scientific task force. Only the best and brightest are recruited to study the problem.
The cloud inexplicably slows upon reaching the sun before engulfing it entirely, cutting off all light to earth. The effects are immediate and catastrophic.
As Earth rapidly begins to die the scientists scramble to find an explanation for what has happened. What they discover will rewrite all that they thought they knew about the nature of life in the universe.