Dave Redmon is at odds--yet again--with his bosses, this time over making a rookie error, and Maya faces freezing brakeline issues as she dashes down the melting ice roads. At the same time, Hugh Rowland hauls 30 tons of boulders across the brittle and thawing surface of Lake Winnipeg as his partner, Rick Yemm takes the sidelines with truck repairs, and Tony Molesky and Lisa Kelly honor a fellow, fallen trucker by spreading his ashes off of the Dalton.