Host Lynn Elmhirst is cruising close to home, sailing aboard the Viking Octantis on an expedition cruise of the newest - and nearest - expedition cruising frontier. This cruise sails from Milwaukee, Wisconsin, and calls in Mackinac Island, Michigan, famous for its historic, summer resort and horse-drawn carriage lifestyle, en route to Canadian waters. Lynn explores North America's "Inland Seas" via zodiac and kayak tours of the forested and rocky shoreline. She discovers natural wonders, explores under the surface in one of the cruise ship's two submersibles, and delves into local indigenous and fur trader history in Thunder Bay, Ontario.