 Farmer slim joins a group of workers who are building power lines. Foreman Red teaches him all he needs and soon they become friends. When they are fired because they protected their boss in a case when another worker died by falling from a mast because he was drunk, they go to Chicago, where they spend their money and visit Red s girl friend, Cally. Cally, who Red doesn t want to marry because he doesn t want to make her a widow if he has an accident - also falls in love with Slim. On another construction site, Slim is stabbed by a personal foe of Red, when he accused him of sabotaging a ladder Red was going to use to 100 feet. Cally, a nurse, comes to the hospital near the construction site and gets Slim back on his feet. Cally proposes marriage if Slim stops working, but he refuses and joins Red on a dangerous job, keeping the power during a blizzard on the northern Eastcoast. Working next to 88,000 volt power line means taking a deadly risk, as Cally, Red and Slim know....