As with previous years, eight people, nominated by their family or friends, enter the Driver Rehabilitation Centre to improve their driving skills.
Before the episode draws to a close and the contestants have their first meeting with the experts, Cam takes Donna, Teagan, Ken and Ashley for a tour of the prison and explains to them that their actions that had led them to their nomination and arrival at rehab could have caused them to be sentenced to prison time—Donna for drinking and driving, Teagan for hit and runs and Ken and Ashley for their street racing on their way to rehab—after which all four are locked in separate cells for a few minutes, long enough to break down and understand where their consequences will lead them if they're not careful.
In the end, Emily admits to needing more rehab, while Amy, Teagan and Donna are told that they will not graduate this episode.
The experts and Andrew are deadlocked, though: Dan and Cam are willing to overlook Ashley's parking brake incident, while Ken has taken rehabilitation to heart (even admitting that he is doing this for his quadriplegic wife), which, in Dr. Gembora's and Phillipe's eyes makes him the best driver.
Donna is taken to the courtroom (the experts are not present) and shown video replays of her performances in the challenges thus far, after which Andrew returns her driving license.
Emily admits that she had owned glasses ten years ago (when she was still in China) and has since stopped wearing them, but agrees to allow the show to arrange an eye exam for her.
The focus of this episode is mainly traditional challenges: drivers will learn how to perform donuts and drive with an attached trailer.
The three-way split decision eventually ends up in Teagan's favour—a decision that does not go over well with any of the three ladies—and he becomes the penultimate graduate, leaving the Driver Rehabilitation Centre in a cab, guaranteeing an all-female finale, with Emily (who believes that she should have graduated, despite doing the worst in most of the challenges) refusing to hug Teagan.
In their final discussion, the experts immediately agree that while she still has some way to go, Amy is not Canada's Worst Driver, as she isn't fearful on driving anymore.
On the other hand, Philippe and Dr. Gembora feel that Ashley is the worst, noting that whereas Emily had at least finally agreed to address her bad eyesight by wearing glasses, Ashley made no attempt whatsoever to improve her bad temper or her relationship with Bryan and that, as superior as her technical skills are (and they're far more superior than Emily's or even Amy's, for that matter), they would be of absolutely no help if she got into an accident through distraction or road rage, leaving Andrew with the deciding vote, which swings in Emily's favour as, despite performing the worst in the Straight Line with a Twist Challenge, the fact that she performed the worst in both the Mega-Challenge and the Road Test (which she couldn't even finish because the alternator in Andrew's truck died heading back to Outer Harbour Marina Toronto), even though Emily committed the most moving violations with nine, means that Ashley is named Canada's Worst Driver and the fourth person (second woman) to be awarded the trophy, while Emily therefore fails to graduate, but is told by Andrew to keep wearing her glasses and she knows that the next step is to gain more driving skills.
Ashley is clearly not too happy with the decision, not least because she leaves the Driver Rehabilitation Centre with her car on the back of a tow truck (the same one, in fact, that towed her challenge car after she left the parking brake on in the Public Lane Change challenge), but also to the point of refusing the trophy and wanting to move to another continent.