Zonguldak, the city of mines and mineworkers, is the city of people who find themselves underground at the risk of their lives, under heavy working conditions. There are also illegal mines in the city. No safety measures are taken in these mines and we witness different life stories experienced under extremely heavy working conditions. One of the most painful stories witnessed in these mines concern the tragic lives of children and mules that have become a part of the illegal coal production process. “Sigh” tells the ruthless struggle that continues in the illegal coal mines of Zonguldak’s mountains