Documentary detailing British punk rock band The Clash's disintegration. Although the group achieved commercial success in the UK with their debut album, it wasn't until their 1979 release of 'London Calling' that they were able to break America. However, following Nicky 'Topper' Headon's exit from the band due to drug addiction affecting his health and his drumming ability, the rest of the group began experiencing in-fighting and increasing tension which would eventually lead to their disbanding in 1986.