At the Edge of the World chronicles the controversial Sea Shepherd Antarctic Campaign against a Japanese whaling fleet. The international volunteer crew, under-trained and under-equipped, develop a combination of bizarre and brilliant tactics with which to stop the whalers. But first they must find the Japanese ships, a far more difficult challenge than ever imagined - long-time activist Paul Watson and first-time captain Alex Cornelissen employ an array of strategies in the hopes of finding an elusive adversary in the vast expanse of the Ross Sea.