The Mississippi River is one of the most important waterways on earth. For nearly a century man has tried to tame it. Measuring 2,300 miles from start to end, the great river requires skill and endurance to navigate in it's entirety, an accomplishment few have done. Marcus, a scientist, ex-marine, and trash-obsessed environmentalist; Stephen, a professional angler and outdoorsman; and Bill, a filmmaker, blogger and traveler set out to travel down the river in just 30 days. National Geographic follows these three determined men on an epic journey full of twists and tribulations as they make their way down the mighty Mississippi. Includes: Headwater to Minneapolis, Minneapolis to Memphis, and Memphis to the Gulf.