Archie and Erica have sold a citrus nursery and are moving their three young boys to the Great Barrier Island off the eastern coast of New Zealand. But far from just moving, they are conducting an experiment in being as environmentally friendly as they possibly can. On the Great Barrier, home owners reduce their ecological foot print by living off the grid and need to do everything themselves from generating their own power to waste disposal. In short, this family gives new meaning to going green. But they can't find a home by themselves. They need an island expert that not only has some properties to show them, but who also knows the ins and outs of adjusting to island living. It's green to the extreme when House Hunters discovers the Great Barrier Island.