The film begins with a nostalgic look at the charming childhood of Addison Schacht, who enjoyed blissful days spent with his mother on sun-drenched beaches. Their laughter and playful exchanges resonate through the grainy footage of home movies, creating an atmosphere of warmth. However, this serene introduction is quickly overshadowed by a melancholic voiceover which reveals that Addison's mother passed away just six months prior to the current events, leaving a profound imprint on his emotional state.
As we transition to the present, Addison is now a teenager who is diligently preparing his application for the University of Chicago, assisted by his loyal friend Phoebe Zeleny. During their visit to a local bakery, they encounter Kevin Broadus, a mutual friend who works there. The trio shares a lively conversation over coffee, showcasing their comfortable friendship and ease with one another.
Things take a drastic turn when Phoebe boldly suggests they share an intimate milestone before heading off to college: losing their virginity together. With their minds set, they head to Phoebe's home, but their plans are swiftly interrupted by an unexpected visitor—a motorcyclist bursts into the bakery, and the situation escalates into chaos when a gunshot shatters the moment, leaving them all in shock.
The aftermath of Kevin's murder sends ripples of despair throughout their community. Gripped by sorrow and indignation, Addison resolves to pursue justice, unwilling to accept the authorities' dismissive stance on the case. He begins by putting up flyers at school, calling for anyone with information about the shooting to come forward.
As his investigation deepens, Addison uncovers Kevin's file at school, revealing that his friend had been seeing a counselor due to feelings of disconnection. This pivotal information strengthens Addison's resolve to get to the bottom of Kevin's murder.
Meanwhile, Phoebe reaches out to a witness of the incident, only to learn that the shooter was white, contrary to initial reports. She shares this alarming news with Addison, along with her discovery that Kevin had been involved with a former student named Noel. Driven by curiosity, they track down Noel and his associate, D. Cash.
Their encounter with Noel and D. Cash leaves Addison with cryptic hints but no concrete answers. Before they can delve deeper, Addison finds himself in trouble with school officials due to finding Kevin's stolen file in his locker, resulting in a week's suspension.
Undeterred, Phoebe informs Addison of what she's learned, prompting them to further investigate Kevin's tangled web of relationships. A visit to Noel and D. Cash yields little, filled with evasive answers and subtle threats. Confronting Kevin's parents, they learn of his recently secretive behavior, but any discussion regarding the murder is downplayed as they imply Kevin could have been involved in sinister activities.
As the story intensifies, Noel and D. Cash contact Addison again, inviting him to meet them. With Phoebe remaining at her mother's party, Addison finally gathers the courage to confess his feelings for her before heading off. During this meeting, Noel and D. Cash reveal shocking details—that Kevin's death was tied to a fierce drug dealer after a nightclub incident. They offer Addison a Faustian bargain: help them with a drug delivery in exchange for the identity of a vital witness from that night.
Armed with this knowledge, Addison fulfills his end of the bargain at a lavish party in a mansion owned by Phoebe's friend Alex Faustner. He successfully completes the deal and is rewarded with the name of the witness: Mike Lorinner. Feeling emboldened, Addison contacts Phoebe, who cautions him to involve the police, but Addison’s sense of urgency propels him forward without hesitation.
Seeking justice, Addison confronts Lorinner at his home with a video camera rolling, intending to document their exchange. As he questions Lorinner, the suspense escalates—he catches sight of the motorcycle linked to Kevin's killer. Just when the tension peaks, Lorinner pulls a gun, revealing that D. Cash is the one who felt wronged by Kevin. As the police arrive, Addison seizes the moment to fight back, but not before Lorinner fires a shot, grazing him.
As recovery from his injuries begins in the hospital, Phoebe visits to share the news that Lorinner, D. Cash, and Noel have all been apprehended by the authorities. Together, they attend Kevin's funeral, a sobering reminder of the repercussions of their actions.
In the aftermath, Addison receives the long-awaited news of his acceptance to the University of Chicago, while Phoebe will head to Yale. As they prepare for the next chapters in their lives, Phoebe gives Addison a heartfelt gift—a train schedule between Chicago and New Haven, a symbol of their enduring connection.
Returning home, Addison finds comfort in watching old family videos with his father, reminiscing about his mother. This moment encapsulates the healing power of shared memories, bridging the past and the hopeful future that lies ahead.
