Banksy is probably the most famous street artist in the world so when he announced back in October 2013 that he would be spending a month in the five boroughs of New York City, exhibiting one new piece of artwork a day, film-maker Chris Moukarbel knew he had to get involved. He tracks the course of the elusive Banksy's secretly created public works, incorporating user-generated content, from YouTube videos to Instagram photos, to capture the uproar created by the mysterious artist.