Tyler Florence meets up with the four remaining food trucks in Las Vegas, and Sin City proves to be the toughest sell yet. The teams have to get creative on the casino floor when they spin the "protein roulette" wheel, and they put their service skills to the test for an in-suite dining challenge on the strip.

In the season finale, the final two food truck teams return to the competition's starting point for an ultimate face-off in the City of Angels. Tyler Florence brings the trucks to an upscale winery, and they're forced to pull out all the stops, knowing that one team will have to close its doors forever and one will walk away with the grand prize of $50,000.