Marty has a near death experience when he plummets through iceon a frozen waterway. Meanwhile, Lauro journeys deep into theuntouched backcountry by dog team to establish an expeditioncamp. Mike crafts a bridge from driftwood logs to traverse arushing river. On the coastline, as provisions run low, Cubsecures a deer to stave off hunger. And Daniel navigates swiftcurrents, venturing to a secluded island to trap elusive riverotters.
