Based on a real life rescue on Lake Erie in Dunkirk, New York, Gloria Mae, a veteran harbor tugboat, is beginning to be overshadowed by younger, flashier boats until one day a sudden, winter storm blows in and traps a fisherman and the boats who try and rescue him. Desperate to reach them and unable to do so because of the build-up of ice on the lake, the rescuers turn to Gloria Mae who has the experience and stamina to brave the elements. She tows...