Children of Men

By 2027, no children have been born anywhere in the world for 18 years. Most governments have collapsed, leaving the United Kingdom one of the few (shown as the only) remaining organised societies. Millions of refugees enter the United Kingdom seeking asylum. In response, Britain becomes a militarised police state. The British Army rounds up and detains all illegal immigrants and suspected sympathisers. A suicide kit called Quietus is marketed on billboards, newspaper ads and television commercials.
Theo Faron (Clive Owen), a former activist turned apathetic bureaucrat, learns that the world's youngest person, an 18-year-old Argentine dubbed Baby Diego (Juan Gabriel Yacuzzi), has been stabbed to death in Buenos Aires in an altercation. Theo narrowly avoids a café bomb explosion attributed to the Fishes, an underground group advocating equal rights for illegal immigrants in Britain. It is later suggested that the bombings are actually committed by the government to "spread the fear".
Children of Men is set in london, it is realistic but with a futuristic twist. We know it is a science fiction film because this wouldnt happen or hasnt happened, . In the first couple minutes of the film it introduces us to the main character Theo, we know he is the main character because the camra focuses on he and gives his point of view. It also tells us that humans cant have babies any more and havent for the past 18 years we know this by the back ground news footage the news also tells us, that the world is in chaos, everyone is at war.