Lex and her boyfriend Dru visit her reclusive brother Leo's top-floor apartment in the heart of London. The young couple discover Leo has created a digital virus intent on gaining absolute knowledge, which is evolving at an alarming rate. The already uncomfortable family reunion turns nasty when the virus traps the trio, and begins to spy on them using disturbing 'biological' drones. Despite outsider Dru's growing resentment towards the siblings' close bond, the three must stay united to have any chance of overcoming Leo's godlike creation.