Harold Faulkner and Blair Gladwell face a high-stakes race for Fairwood’s mayoral seat as their town teeters on the edge of a tense Founders Day. In this fraught backdrop, Harold’s estranged daughter Melissa Faulkner accompanies her girlfriend Allison Chambers to the Bank Street movie theater where Allison once worked. Melissa stays outside amid political protestors while Allison goes inside to retrieve a sentimental padlock she left behind, a quiet detail that will soon take on chilling significance. Inside, Allison crosses paths with Melissa’s brother Adam Faulkner, who works at the theater, and with Melissa’s ex-boyfriend Rob Donahue, now entangled with Adam’s ex Lilly Gladwell, the current mayor’s daughter. The web of past loyalties and hidden resentments begins to tighten.
As the town prepares for a weekend trip into celebration, Allison and Melissa head for a bridge famous for lovers placing initials on padlocks. There, Melissa is brutally attacked by a figure dressed in a red mask, powdered wig, and a judge’s robe. The attacker appears to beat Melissa with a gavel before hurling her into the water below, and Allison barely escapes with her life, returning to town in a race against time to report what happened. The next morning, the local high school buzzes with fear as Deputy Miller interrupts a Founders Day lesson taught by the respected Mr. Len Jackson to pull Adam from class. With Adam living apart from his father Harold’s political orbit, the revelation that Melissa is missing lands like a blow to multiple families at once, and Harold, accompanied by his wife Nancy, must grapple with the sudden shock.
Back at City Hall, Blair’s chief advisor Oliver Hull weighs the option of scrapping the Founders Day festivities—even as a killer may still be at large. The council weighs the risk, and Blair makes the final call to proceed, much to Harold’s anger, which he channels into a public display of disapproval that underscored how personal grievances have become a political weapon. At school, Tyler and Britt stage a prank, pretending to murder Allison in a bid to test her loyalty; Len Jackson, who runs detention, gives them a stern but ultimately frustrated reprimand. The prank fades into the night as Lilly tries to mend her fragile relationship with Adam at a party for theater staff, while Rob’s jealousy flares, culminating in a tense confrontation with Lilly and a bar dismissal that leaves Rob scrambling.
The night blindsides the town once more when Tyler and Britt perform their fake murder on Lilly alone in the theater, only for a second, more brutal crime to reveal itself—the real killer slits Lilly’s throat after the rehearsal. The shock ripples through Fairwood as Adam confesses to Allison that he broke up with Lilly because Lilly was seen kissing Rob in an alley, adding a tangled layer of romance and revenge to the murders. The morning after, Harold comes to collect Adam and a charged exchange with Allison’s father Thomas Chambers exposes the growing rift in families already divided by politics.
Founders Day marches forward, and Len hosts detention for Tyler and Britt with his own brand of strict control. When Len’s classroom door shuts, the couple’s private moment on Len’s desk is interrupted by the murderer, who ends their lives in a brutal instant. Rob's discovery of Lilly’s body in a dumpster shatters any remaining sense of safety, and Deputy Miller and Commissioner Peterson flip the switch, forcing Blair and Oliver to halt the festival. Blair’s panic erupts into a wild, grief-driven scream, and the mass confusion deepens as a manhunt tightens its grip on the town.
Allison, drawn by a mix of dread and determination, returns to Len Jackson’s classroom to confront Adam, who has donned the killer’s costume and left cryptic messages on the chalkboard. The chase spills out into the open, and Allison flees toward her father, Thomas Chambers, who defends her with grim resolve. In a brutal, fatal act, Thomas impales Adam through the stomach. As Adam’s dying words echo—> It wasn’t supposed to happen like this.—the police turn their attention to the increasingly murky trail of clues and motives.
Commissioner Peterson confronts Thomas with suspicion, and a growing sense of paranoia sweeps Fairwood as Rob tries to escape, finding himself on the run with Allison handcuffed to a bridge. The deputy’s miscommunications and conflicting accounts fuel the confusion that grips the town, and Allison, left to navigate a landscape of rage and fear, heads home, unsure whom to trust.
The stunning depths of the town’s conspiracy emerge when Allison discovers that Melissa has been orchestrating the chaos from behind the scenes. Melissa reveals how she and Adam manipulated Melissa’s apparent attack to feed Len’s long-term plan, and how Lilly’s heartbreaks and Rob’s jealousy wove into the killer’s path. Melissa’s master plan is to frame Allison while using her own family’s grievances to push a ruthless line of succession that would propel Len into mayoral power without an election. Len’s chilling ambition is laid bare, with Oliver and Deputy Miller revealed to have been complicit, each drawn into the scheme to obscure the truth behind a tapestry of murders.
In the final, brutal exchange, Len’s manipulations are exposed, and Melissa’s mask is finally lifted by a desperate confrontation that ends with Melissa dead and Allison left to pick up the shattered pieces of Fairwood’s political dream. Len’s appeal—that he would, in theory, remake Fairwood for the better if she kept silent—hangs in the air as the town reels from betrayal, murder, and the realization that the line of succession Len envisioned had already begun to take shape.
One year later, the aftermath of Len’s scheme finds him still in power, serving as mayor with Oliver functioning as his trusted advisor, while Allison forges a new path of leadership as she becomes the student president at her university, continuing to navigate the fallout of the town’s darkest days and the complicated legacies left in their wake.