Paul Watson is the captain and founder of Sea Shepherd, a group of self-proclaimed "eco-pirates" who fight for marine conservation. Their mission is to confront and stop Japanese fishing vessels from killing whales in Antarctica. Each episode spotlights how Sea Shepherd takes action against alleged illegal whaling operations.
As the first leg of their campaign comes to a close, the Sea Shepherds battle physical and mental exhaustion, especially pilot Chris Aultman. Thanks to an anonymous tip, the Steve Irwin finally locates the whalers' factory ship, the Nisshin Maru.