After a long time of hurricanes and oil spills, Louisiana faces a brand new risk - hordes of monstrous 20 pound swamp rats. Often called "nutria", these invasive South American rodents breed sooner than bounty hunters can "management" them. With their orange tooth and voracious urge for food they're consuming up the coastal wetlands that protects Thomas and his city of Delacroix Island from hurricanes, however the individuals who have lived right here for generations is not going to hand over with out a battle.