Overview: The Paul R. Tregurtha is equipped to deal with the harsh weather conditions of North America's inland seas, but her first mission of the shipping season will push the vessel, and her crew, to their limits. Hop aboard the "Queen of the Lakes" as she attempts to deliver a much-needed 55,000-ton coal supply to a generating plant in Michigan. To get there, she must break through a barricade of ice and pass a shallow passage with just two feet of water beneath her keel. If the captain and crew aren't careful, they could find themselves stopped dead cold.