Tate is a 17-year-old high school senior who recently returned to her hometown. She lost her mother to cancer at age ten, and because her father works an hour away in Chicago, she manages her household independently for months at a time. She excels in academics and running but suffers severe anxiety due to the relentless bullying of her next-door neighbor. Deciding she will no longer be a passive victim, she returns from France determined to set firmer boundaries.

Jared is Tate's next-door neighbor and former confidant who mysteriously changed his attitude after spending a summer with his father. He currently operates as the school's primary instigator, using rumors, pranks, and physical intimidation to control his environment and make Tate miserable. He spends his weekends participating in unofficial street races at a local track called the Loop and frequently throws loud parties at his house.

K.C. is Tate's closest companion at high school. She is socially active and frequently urges Tate to stop avoiding her neighbor and fight back against his hostility. However, her desire for social engagement sometimes overrides her loyalty, leading her to make romantic decisions that cause friction in her friendships.

Madoc is a physically aggressive teenager who acts as Jared's loyal sidekick. He lacks personal boundaries and frequently uses crude language and physical harassment to intimidate female peers. His brash actions eventually force Tate to retaliate physically to protect herself in the school cafeteria.

A former military man who works an hour away in Chicago. He is a supportive but physically absent parent, trusting his teenage daughter to handle her own daily routine while he is gone for months at a time.

Ben is a high school student who expresses immediate interest in Tate upon her return to school. He invites her on dates and to the local racing track, though he quickly demonstrates off-putting behavior when under the influence of alcohol.

Piper is a local girl who regularly attends the street races at the Loop. She views herself as Jared's primary romantic prospect and actively warns other girls to stay away from him.

A concerned relative who insists on visiting Tate while her father is away in Chicago. She recognizes the tension between Tate and the neighbors and encourages her granddaughter to communicate rather than bottle up her emotions.

She lives next door to Tate and struggles with an alcohol addiction. Her emotional absence leaves her son largely to his own devices, though she attempts to maintain polite neighborly relations.

A high school boy who spends his evenings hanging out at the Loop. His unfaithfulness prompts a shift in K.C.'s romantic priorities.

A classmate who repeatedly ignores Tate's rejections. His inappropriate physical advances at a bonfire party prompt a violent intervention from others.

A man who lives away from his son. A summer custody visit to his home drastically altered Jared's personality, leaving long-lasting impacts on his behavior and family structure.

Jared's half-brother. Jared only learned of his existence during a fateful trip to visit his father at the age of fourteen.

Jared's loyal pet dog. Before the teenagers' friendship ended, Tate and Jared worked together to rescue him. He continues to recognize Tate and actively seeks her out.