New kids Caitlyn and Zac Torres navigate the hierarchy of Ironwood High School, and try to avoid the dark cloud of their notorious father. Logan struggles to make ends meet. Caitlyn meets Curtis, a loner caught in a tug of war between his father, the Sheriff, and his brother, a local criminal. Zac befriends the “unpopular” Marcel, while making an enemy of street racing champ, Harris Bowers.
Urged by Logan to repair his friendship with Marcel, Zac suggests they go to an unreasonably dangerous Go-Kart track. Curtis invites Caitlyn to a family BBQ, where a surprising guest joins them. Harris prepares for an upcoming street takeover. Sam discovers how much Ironwood has changed, while Logan reminds her that the best parts of Ironwood will always be there.
Zac and Curtis skip school together and watch some high octane drag racing at an abandoned air strip, run by Curtis’ brother, Ray. Kiara invites Caitlyn to lunch, which turns into a group outing. A video of Harris Bowers’ street takeover is mocked online, leading to an exhilarating street race. Zac asks Logan to train him, just like he taught his brother, Zac’s dad, years ago.
With only three weeks until Zac’s race with Harris, the crew works overtime to finish the UNB10 car. Zac’s confidence grows with Ray’s guidance. Caitlyn and Curtis discover a possible clue to Christian Maddox’s whereabouts. Logan discovers who Zac’s been training with. Harris faces a new challenge on his mom’s birthday memorial. Curtis takes Brooke for a ride on his bike.
Homecoming. Marcel and Brooke’s post-apocalyptic themed dance is a big hit. Zac hopes to meet up with Alicia. Hitting an electrical snag with the car, Caitlyn and Curtis wonder if they should skip the dance. Sam and Darren Bowers co-chaperone, looking out for “commotion.” Kiara is fed up with Noah. And one of the bank robbers from 17 years ago gets out of prison.
UNB10 is ready for the big race, but is Zac? Caitlyn visits Buzz at the junkyard, wondering what’s next for her. Marcel takes a leap of faith. Brooke prepares for her winter break. Curtis confronts his father. Logan attempts to get out of Ezra’s plan. Kiara stands up to her mom. And Harris, feeling lost and alone, reaches out to Alicia.