The season claims its first victim; Jack returns to defend his crow and faces-off against Greg; Lisa makes a decision that will haunt her; Ray gets a hard introduction; Alex challenges Hugh.
Trailer breaks and trash talk threaten Lisa’s comeback; Greg reignites his rivalry with Jack; Alex tries to build his lead; Hugh returns to Alaska; engine troubles plague Ray.
Jack, Hugh and Alex have some near missises; Ray and Greg convoy through the storm, but a break-down leaves Greg ready to quit; Lisa is determined to prove she is more than a pretty face.
Alex faces a white-out; Hugh and Jack run together for safety, but bad blood heats up; Ray and Lisa make rookie mistakes that send them rolling directly into the heart of the storm.
Jack battle a storm to deliver supplies to Nuisqut, Lisa battles the elements and the law; Ray makes a mistake on a night run; Alex’s trash talking stirs Polar Bear; Hugh races to Coldfoot.
Jack has a near head-on collision; Hugh gets an earful from an American driver; Alex picks up a hitchhiker; Ray takes on Atigun pass; Lisa tries to get back on the road.
Jack is stranded by an avalanche; Ray faces the Dalton with premonitions of death; Lisa tries to get back in the race Hugh risks a head-on collision at 4,700 feet at Atigun pass.
Lisa hauls 100 tons through the state of Alaska; Alex races to keep pace; Greg could be a hero of the road, but a spin-out finally sends him over the edge.
A Dalton truck flip leaves two men injured and one missing; Alex is thrust into turmoil; a careless mistakes plagues Lisa; Greg fights for his job; Ray has a scary realization; Hugh devises a plan.
Jack tries to reach the isolated town of Bettles; Lisa’s road to redemption is dangerous; Greg hauls the biggest load of his career and Alex tries to one-up Hugh—but the Polar Bear fights back.
Ray run’s into a rookie nightmare; Lisa roars up the Dalton with a bear cage in tow; Polar damages his load when he ignores his poorly loaded cargo.
Ray spins out into oncoming big rigs; Jack battles a 200-ton haul; Alex risks a bust by the DOT; Lisa raises cash to buy back her horse; Greg drives into mechanical problems.
The truckers form a convoy for the first time to cross softening ice to deliver critical supplies to Nuiqsut while avoiding a watery grave.
Ray honors a Haul Road legend but winds up in danger; Lisa gets her big break; Alex is busted; Jack hauls an explosive load and Greg trucks an unstable mega-reel of pipe.
Drivers race to rack up loads for the Dash for Cash. Jack and Lisa convoy together; Greg and Ray use the buddy system until Ray hits Greg where it hurts; Hugh gets busted for speeding