After three weeks on the river, all the crews prepare to winterize their rafts for the fast-approaching freeze. Scotty’s crew insulates their raft with dried moss and collects firewood they hope to sell in the village of Ruby. Rookies Andrew and Josh soak in a thermal hot spring and rest before deciding to travel down the treacherous Yukon through the night. Neil’s crew practices survival skills, while Lauro works on a tent for his sled dog. In Ruby, Andrew and Josh are the first to cash in while Scotty’s crew arrives second and has to sell their wood at half price. All the crews end the night bonding before the winter freeze sets in.