Follow controversial Canadian activist Paul Watson as he sets sail with a crew of 46 volunteers who draw on the spirit of piracy to protect the treasures of the sea. Whale poaching is a lucrative trade, one that the Sea Shepherd Conservation Society is determined to put to an end. The captain of the Sea Shepherd, Watson left Greenpeace behind in favor of operating by his own methods. When you're working against Japanese poachers who exploit loopholes in the law in order to surpass an international ban on whale hunting, you need to be ready to innovate. The Jolly Roger flag that flies atop the their ships -- not to mention the helicopters they carry that enable them to photograph their targets by air -- serve as a symbol of that innovation, and a warning to poachers everywhere that the Sea Shepherd Conservation Society isn't afraid to get aggressive. Once they've found their targets, tactics can include everything from ripping open their hull with a steel tool known as the "can opener," to using rope to tangle their propellers, or dropping stink bombs that make whale meat inedible. As the crews of the Robert Hunter and Farley Mowat face challenges both mental and physical, the viewer gets to see firsthand just how far some people are willing to go to save an animal's life.