Documentary following ten-year-old Christopher, who is one of America's youngest anti-gun campaigners. He's got some big names supporting him, from Oscar-winning Hollywood actress Julianne Moore to top British rap artist Tinie Tempah. Christopher's oldest brother Akeal was shot dead five years ago in Brooklyn, New York, sadly just one of more than 30,000 Americans killed by guns in 2012 - just as in every year since. With around 300 million guns in the USA - about as many guns as people - Christopher's on a mission to discover why guns are such a big part of American life, and to find out what he can do to make the streets safer.