Episode 5 of "Motorheads" kicks off with an exhilarating scene of Zac and Ray participating in a high-stakes street race. When Zac, inspired by the thrill, asks Ray to mentor him in the art of racing, Ray obliges by challenging him to a race of his own. However, Zac falls short, prompting Ray to declare that he lacks the necessary skills to become a racer. To add insult to injury, Ray loses the car in a subsequent race, and jokingly claims that Zac owes him a replacement. Deflated, Zac vows to Cate that he will steer clear of racing, even after they complete their masterpiece, the UNB10.
The following day, Harris receives a startling revelation from his father: Alicia's dad has made an offer to acquire all their real estate in town, an offer that his father has accepted. Determined to make the best of the situation, Logan and Zac head over to Alicia's mansion to lend a hand with her father's extensive car collection. Meanwhile, Cate joins Sam for a hearty breakfast at the local diner, where she notices hints of Brooke's growing interest in Curtis. Sam's eyes light up as he spots his first car arriving in town for the upcoming car auction, and Cate encourages him to bid for it.
At Alicia's opulent residence, Zac finds solace in her company while Logan marvels at the extensive array of automobiles. Elsewhere, Logan reminisces fondly about Marcel's father's chili jam, longing for a taste at the auction. Determined to fulfill his craving, Marcel gathers all the ingredients but finds himself hopelessly botching the recipe. Unable to bear the thought of his son's culinary disaster, Marcel's chef father steps into the kitchen to take over, ensuring the chili retains its authentic flavor.
Sam treats Cate to a scenic visit to her favorite spot in town, where she confides in him about her hesitation in pursuing a romantic involvement with Curtis amidst their shared project of restoring Christian's car. Sam wisely advises that they navigate their emotions once the car is completed.
Back at the Whitakers', Logan's keen insight into automobiles impresses Bruce, who agrees to have one of the prized vehicles from Alicia's collection delivered to his garage for inspection. Zac and Alicia bond during their time together, with her revealing that she'll miss the auction due to a horse-jumping competition she's attending with Harris.
Elsewhere, Harris, devastated by his father's decision to sell their heritage, invites Brooke over. Though he claims money is of no consequence, it's the legacy he's truly fighting for. Brooke urges him to stand up for what he believes in if he doesn't want to lose it all. In a moment of weakness, Harris deceives Brooke by pretending to have broken up with Alicia.
Bruce generously offers Logan triple the book value for his car, but Logan politely declines the offer. Meanwhile, Sam and Cate spend some quality time together at Sam's favorite spot. As they hang out, Sam reminisces about how she first met their father in that very place, which has since become her cherished haven. The spot holds a special place in her heart; whenever she's there, she feels an assurance that everything will be alright. Sam encourages Cate to discover her own special spot—a place where she can go to unwind and feel secure.
At the bustling car auction, Marcel's father is thrilled about setting up his booth and even brings along a sign to attract attention. However, contrary to his expectations, the crowd lines up not for his chili but for something else. Harris and Alicia's father also arrive at the auction, adding to the excitement. Zac notices that no one is attending Alicia's horse race and decides to ask Curtis to take his place at the booth while he heads out to the race.
Harris pleas with his father not to make a deal, but it's already too late; he has signed the papers with Alicia's father. Sam eagerly tries to bid for her first car, but Bruce outbids her, knowing full well that it's her first car. Undeterred by her emotions, he still goes for it, adding another story-laden car to his collection. Sam is visibly disappointed about not securing the car.
Brooke asks Marcel to take down the sign, reminding him that selling the diner also means selling the rights to use "Wade's Diner." Unable to bear the sight any longer, Marcel's father decides to leave the auction. Elsewhere, Zac and Alicia bond over their shared determination to work harder and not let anyone discourage them from achieving greatness.
Back at the auction, Brooke confronts Harris for lying to her. She confesses that she has feelings for someone else and kisses Curtis, who reciprocates her affections. Cate witnesses the kiss and feels a sense of clarity, finally finding her own special spot as she heads back to the garage and sits quietly in the UNB10.
Upon her return, Logan confides in him, expressing her fondness for the garage, wistfully wishing it could remain at her disposal for longer, given her pressing need for it. Moved by her sentiment, Logan decides to accept Bruce's offer and sell him his cherished Mustang. During the negotiations, an unexpected twist unfolds as Logan regains possession of Sam's very first car.
Elsewhere, Marcel's father, consumed by grief over the loss of his name, succumbs to intoxication and ventures into Wade's diner, hurling a bottle through its windows in a fit of rage. Meanwhile, Curtis, Cate, and Marcel find solace in each other's company at the garage, creating a sanctuary amidst the chaos.
Determined to rekindle his passion for racing, Zac seeks guidance from Ray, embarking on a fresh journey to reclaim his seat behind the wheel. As the episode draws to a close, Logan and Sam embark on a nostalgic drive, cruising down memory lane in her vintage Mazda RX-7, the wind in their hair and the open road ahead.
