The episode "Red, Green, Blue" of Motorheads begins with the team working late into the night on restoring the UNB10 car, with Cate pushing the boys to keep going until Logan insists they stop because they have school the next day. Zac practices driving at the junkyard with a battered car called "Dottie," where the yard owner Buzz advises him that racing is about knowing when to hit the gas or the brakes. Zac's confidence grows under the guidance of Ray, who is also involved in a heist crew and asks Logan to drive for them, but Logan refuses.

Meanwhile, Harris is grounded without his car and must rely on Alicia to drive him around. Curtis helps Cate with the UNB10 restoration and seeks vintage parts from Ray, who demands Curtis's help on a job in return. During Ironwood's annual Fireflies Festival, Cate and Curtis grow closer, and Cate shares a moment with Kiara, the mayor's closeted daughter. Marcel reveals his new racing logo, but tensions rise when Zac loses a street race and wrecks Marcel's car.

That night, Ray and his gang attempt a robbery during the festival blackout, but police interference limits their haul. In retaliation, they destroy Logan's classic Mustang. Cate, Zac, Curtis, and Marcel jump from Ironwood's bridge as promised, but tensions flare when Marcel blames Zac for the broken car. Under the water, a necklace sinks, revealing Christian Maddox's long-lost car at the river's bottom.

Caitlyn and Curtis discover a possible lead on Christian Maddox's whereabouts, while Logan learns who Zac has been training with. Harris faces a new challenge on his mother's birthday memorial, dealing with emotional struggles related to his loss. Curtis takes Brooke for a ride on his bike, providing a moment of connection and relief from the ongoing tensions.

The episode closes with the team rushing to complete the UNB10 car with only three weeks left until Zac's race with Harris, highlighting the urgency and stakes involved in the upcoming competition. Throughout the episode, key decisions include Curtis agreeing to help Ray with a job to get parts, Zac committing to training with Ray despite Logan's disapproval, and Harris confronting his feelings during his mom's memorial, all of which drive the story forward.

The episode "Red, Green, Blue" ends with the crew completing the UNB10 car as Zac's confidence grows under Ray's guidance. Caitlyn and Curtis discover a clue about Christian Maddox's whereabouts. Logan finds out who has been training Zac. Harris faces a personal challenge on his mother's memorial day. Curtis takes Brooke for a bike ride, and the episode closes with the team preparing for the upcoming race between Zac and Harris in three weeks.

Expanded narrative of the ending scene by scene:

The episode culminates with the team working intensely to finish the UNB10 car, racing against the clock with only three weeks left before Zac's big race against Harris. The atmosphere is tense but hopeful as Zac, under Ray's mentorship, gains confidence in his driving skills. This marks a significant moment for Zac, showing his growth and readiness for the challenge ahead.

Meanwhile, Caitlyn and Curtis uncover a promising lead regarding Christian Maddox's whereabouts, adding a layer of mystery and urgency to their subplot. This discovery hints at unresolved issues and potential future developments in the story.

Logan, who has been somewhat in the background, reveals that he has learned who Zac has been training with, which adds complexity to the relationships and alliances within the group.

Harris, dealing with the emotional weight of his mother's memorial, faces a personal challenge that humanizes him and deepens his character beyond the rivalry with Zac.

In a quieter, more intimate moment, Curtis takes Brooke for a bike ride, providing a brief respite from the tension and highlighting the personal connections among the characters.

The episode closes with the team united and focused, the UNB10 car ready, and the race looming, setting the stage for the next chapter in their intertwined stories. Each main character involved in these final scenes--Zac, Caitlyn, Curtis, Logan, Harris, and Brooke--ends the episode positioned for significant developments, with Zac and Harris's upcoming race as the central event to watch.

In episode 7, 'Red, Green, Blue,' the team is under pressure with only three weeks left until Zac's race with Harris, so they rush to complete the UNB10 car, working overtime to get it ready in time.

Zac's confidence grows as he trains with Ray, who acts as his trainer and mentor during this episode.

Caitlyn and Curtis find a possible lead related to Christian Maddox, which could be important to the storyline.

Harris deals with the emotional challenge of his mom's memorial, which occurs around the same time as the upcoming race.

Curtis takes Brooke for a ride on his bike, which is a notable subplot in this episode.

The TV show "Motorheads," Season 1, Episode 7 titled "Red, Green, Blue" is generally mild in content but not fully family-friendly for very young children or highly sensitive viewers. It contains mild instances of sex and nudity, violence and gore, profanity, alcohol, drugs, and smoking, as well as some mild frightening and intense scenes.

Potentially objectionable or upsetting aspects for children or sensitive people include:

• Mild violence and some scenes involving car crashes or aggressive behavior.
• Mild language and occasional profanity.
• Mild sexual content or nudity.
• Depictions of alcohol use, smoking, and drug references.
• Some intense or suspenseful moments that might be unsettling.

Overall, the show is a teen drama with emotional depth and street racing action, so it is more suitable for older teens and adults rather than young children or very sensitive viewers.