Danger Overhead Powerlines is a modern-day story of David and Goliath. This short documentary follows Teresa Treacy as she battles against Ireland's largest international semi-state corporation, the Electricity Supply Board, to protect the thousands of trees she planted by hand. In late 2011 she was sent to prison at age 65 for not allowing the ESB access to her land to cut down her trees. This story intimately follows Teresa's journey during and after prison, giving an inside perspective to a relentless fighter and advocate of nature.