Noah, seventeen-year-old, moves into a luxurious new home after her mother Rafaela marries billionaire William Leister, a change that tests her sense of safety and belonging in ways she did not expect. She struggles to adjust and immediately clashes with her new stepbrother, Nick Leister, a rebellious street racer whose world is fast, flashy, and often dangerous.
On their first evening, Noah is taken to the Leisters' country club for dinner. Despite a closet full of expensive clothes, she opts for an oversized Ramones tee, signaling the tension between her stubborn independence and the gilded setting. Soon after arriving, both Noah and Nick want to leave, and William asks his son to drop her off at home first.
En route, the argument between Noah and Nick escalates, and he forcefully ejects her from the car. Left to hitchhike down a lonely road, she accepts a ride from someone heading to a party. Nick, meanwhile, becomes the center of that party, where Noah watches in dismay as he flirts and kisses several women. When a party-crasher spikes Noah’s drink, Nick helps throw him out and then drives her home for the night.
The next morning, Noah grills Nick about what happened, but he insists nothing happened. They cross paths again at the beach and later at a rally, where the tension simmering between them begins to change. Noah starts receiving upsetting messages from unknown sources—images of her ex-boyfriend Dan and her best friend Betty whom she left behind—while Nick casually suggests they could exchange provocative photos of each other, intensifying the dangerous edge of their growing relationship.
Dan shows up, attempting to apologize to Noah, and Nick taunts him while doing his best to stay unrecognizable. Local guys from a rival gang arrive, and Nick fends them off, underscoring the perilous environment they inhabit. A car ride later reveals that Noah learned about racing from her father, Jonás, who she says is dead. The two eventually find themselves at an arena that doubles as a fight club, where Nick is revealed as the star attraction. Noah declares she cannot stay near someone so violent, even as their bond deepens.
William later reveals to Nick that Noah’s abusive father has just been released from jail and is seeking revenge. Jonás had beaten Rafaela for years, but her testimony had put him away. Noah has not been told he is out, because Rafaela knows the knowledge would terrify her daughter.
At a party later, Noah—drunk and terrified of the dark—gets locked in a closet as a prank, triggering a brutal flashback of the night Jonás hurt her. Nick brings her home, and she asks him to stay by her side through the night to ease the nightmares.
The situation escalates when Jonás, with the help of Ronnie, kidnaps Noah and demands a ransom. Nick teams up with the police to track her down, triggering a high-stakes car chase that ends with Jonás being killed. Even though their relationship is discovered and their parents disapprove, Nick and Noah decide to stay together, facing a future that intertwines loyalty, danger, and a fragile, evolving love.
