As a massive object called Wormwood approaches Earth, a religious group called the Brotherhood believes it is a sign of the Rapture and that the end of the world is near. They plan to use technology to broadcast a message to all humans that could either save them or kill them. Meanwhile, a secretive group called the Illuminati works to stop the Brotherhood and divert the approaching object, believing it to be natural. Both groups prepare for a battle that could determine the future of humanity as the object nears Earth.