Lisa battles the heat and struggles to make the transition from Alaska; Alex slams into two vehicles out on the crowded roadways; Rick risks a head-on collision with multiple buses that refuse to give up an inch of road.

Rick and Lisa go deeper into the Himalayas and up a new stretch of road called The Ledge; Alabama highway trucker Dave Redmon joins the team and quickly has the most terrifying ride of his career.

Dave stares down the notorious Freefall Freeway in a truck that is in horrible need of repair; Lisa heads back up to The Ledge and a flat tire leaves her teetering on the edge; the crowded roads finally bring Rick to the breaking point.

Lisa is in grave danger with an oversized nine-ton load on a crumbling mountain; Rick gets news from home that that will determine his fate in the Himalayas; Dave's scrape with an oncoming bus causes the angry occupants to surround his vehicle.

Rick decides to stay after getting good news from home; Rick and Lisa drive higher into the Himalayas with fragile statues of a Hindu goddess; Dave tackles the notorious Ledge for the first time.

The drivers climb to over 13,000 feet, as they tackle the Rohtang Pass; Rick delivers a sacred Buddha statue between monasteries; Lisa brings much needed supplies into Keylong.