Emmy-winning host Jeff Corwin takes viewers aboard some of the world's top cruise ships with this series. Corwin experiences some of Earth's natural wonders while stopping at various ports during his journey. As he explores the areas where he stops, Corwin goes on adventures that have him doing activities like climbing mountains, going on deep sea dives and touring glaciers. As most viewers won't get a chance to experience such events themselves, Corwin gives them a chance to experience them through his adventures.