When Jack receives a phone call from a colleague in the southeast of Tasmania with news of a newfound butterfly habitat, he and Lawson head off on another adventure.
It's not an easy trek to the location.
The Franklin-Gordon National Park is famous for wild rivers, rainforests, and rocky cliff faces, and they'll need to hike and abseil-in the dead of winter-to get to the site.
It's no ordinary expedition because this is no ordinary butterfly, and Jack and Lawson aren't an ordin.
