Since a few decades they were watching us. Studying us. What are they? Nobody knows. Nobody but Ivan Petrenko Karkarov. The Russian physicist started to study a phenomenon which was occurring since several decades. In 1982 he found an answer to the strange phenomenon but before he could tell anyone he mysteriously vanished. 30 years later, in Newell Iowa, Dean Hollister seems to be a normal guy until strange radar anomalies appear throughout the world. All of a sudden something starts to happen at the sky, black rifts appear. Behind those rifts something is moving. It's watching us.

When Elias van Dorne, CEO of the world's largest robotics company, introduces his most powerful invention, Kronos-a super-computer designed to end all wars-it determines that humans are the biggest threat and launches a worldwide attack on mankind. A small band of survivors must form an unlikely alliance to survive the greatest artificial intelligence threat man will ever know.