Beau is one of the hardworking men who risk their lives to work "on the line" and keep the electric grid running. These unsung heroes brave raging storms and dangerously dizzying heights in their dedication to keeping the populace safe. Toiling hundreds of feet in the air on wires carrying as much as 500,000 volts of electricity, tragedy is often inches away. Haunted by the electrocution death of his brother, Beau is devoted to his niece Bailey, and determined to see her go off to college and get away from the life of linemen. But Bailey has other plans, which include the strapping second-generation lineman Duncan whom Beau despises. As a deadly storm heads straight for their Texas town, Beau, Duncan and a legion of linemen are thrust into the eye of the storm and must face down impending disaster to keep their community connected.