Richard and Aaron get together to look back at their partnership as Aaron prepares to say his final goodbye to Fast n' Loud.

With race day against the Street Outlaws fast approaching, Aaron struggles to get his BMW ready on his own while Richard faces potential disaster when the Challenger crashes on its final test run.

Aaron quits Gas Monkey just as Richard agrees to a drag strip showdown with Big Chief of Street Outlaws, leaving the Monkeys to build a race car on their own at the same time he's challenged to his own race against another set of Outlaws.

With Aaron off on vacation, Richard tasks the Monkeys with giving the Gas Monkey treatment to the first car he ever owned back in high school, a vomit green '74 Mercury Comet.

Richard and Aaron host a star-studded party to celebrate the past, present, and future of the Gas Monkey Garage.

With Aaron set to take off soon for a long-deserved vacation, he and Richard get the Monkeys started on giving the proper treatment to a '65 Volkswagen Beetle.

After Aaron bets Richard that the Monkeys would be able to finish building a 1980 El Camino one week ahead of schedule, last-minute problems threaten to push them past their deadline.

Banking on a speedy build because of all the aftermarket parts available for G-body cars, Aaron bets Richard he can finish a 1980 El Camino in three weeks instead of four.

As Richard gets ready to gamble selling a million dollars worth of cars at Barrett-Jackson, last-minute problems with their '55 Chevy threaten to keep him from taking it to auction.

With Aaron headed to Pike's Peak again, he tasks the Monkeys with building a '55 Chevy in less than two weeks when Richard plans to sell it at a Barrett-Jackson auction, among about a million dollars worth of cars.