The Three Kings

Celtic, Liverpool and Manchester United football clubs have a combined global fanbase of billions, built on years of success. This documentary pays tribute to three men from mining communities around Glasgow - Jock Stein, Bill Shankly and Matt Busby - who became best friends and fierce rivals as managers of the three clubs, trading life around the pits for the chants of supporters around the pitch. The film explores how their upbringings shaped their fortunes.