Todd hauls a massive machine as he fights his way home in a final showdown with his nemesis ? the infamous Asheweig Road. After a risky brake fix during her longest run of her season, Lisa searches for a bit of home to recharge. Scooter calls in a local road crew after losing a battle with an angry hill on his return trip along the goat trail. And Riley and Zach face a dangerous breakdown and a massive lake crossing on their first solo run without Shaun.