Sailing out of the Arctic into the South Pacific, Alfred and his dog and seagull crew encounter fishermen on a shrimp trawler who will kill anything in their way - turtles, dolphins, sharks, even people - in their desperation to make fast money. They also discover that the vast Pacific Ocean contains sunken warships, airplanes, radioactive debris and millions of tons of plastic garbage, all of which appear to confirm a dire prediction given to Alfred by an Inuit elder: "The sea is dying."