When William Blake wakes up at 7:36, after being unconscious for an unknown amount of time, he finds himself lying face down on a central London street. He's alone. The streets are entirely deserted. He's scared. He's angry and he's confused. He has no recollection of who he is or how he got there.
He wanders around the eerily silent streets of what should be a bustling city. Something's wrong, badly wrong. There's not a car or a bus on the streets. All trace of life has been totally removed. It's as if 7 million people, the whole population of the city of London have mysteriously vanished. Is it a bomb? A biological attack?
As William explores further he discovers that he is now, one of a group of seven total strangers, the only survivors of some form of catastrophic disaster. The question is though; Why are they the only ones left alive?
Luckily one member of the group is a uniformed soldier, Sergeant Jack Mason, (Tamar Hassan) is carrying an armed weapon. He has taken control of the group in order to restore some form of order. It's been becoming more difficult as time passes by. Things are starting to get out of control. They are all are suffering from flashbacks reminding them of those situations they've already been in.
After one of the group member disappears and is found murdered, Sergeant Jack Mason realizes that they are not the only survivors in the deserted city. Nobody can trust the other. Someone or something is picking them off, one by one. Now, together they must face up to the biggest fear of them all. The fear of the unknown. Will any of them survive?