All the Boys Love Mandy Lane

In the Texas town, Mandy Lane's charm surfaces over the summer as she attracts Dylan and other male classmates. Dylan invites her to a pool party at his house, and Mandy agrees. She stipulates that her best friend Emmet can come too, setting the stage for social crosscurrents.

During the party, Dylan bullies and humiliates Emmet, pushing him to the margins. Mandy steps in to defend Emmet, shifting the social dynamics. The moment reveals the tensions lurking beneath Mandy's popularity.

As revenge, Emmet convinces a drunken Dylan to jump from the roof into the pool. Dylan misjudges the jump, smashes his head on the concrete, and dies from the injuries. The party mood collapses into a grim, deadly game.

Time jumps forward nine months to a high school social landscape where Mandy has befriended Dylan's popular circle. Meanwhile Emmet suffers even harsher bullying, their fates now intertwined by tragedy and resentment. The school's social ladder becomes a potential trap.

Stoner classmate Red plans a weekend party at his father's remote ranch, and Mandy reluctantly agrees to go when Chloe, a popular but insecure cheerleader, invites her. The invitation hints at a new social frontier and danger alike. Mandy's decision sets the stage for a deadly night.

The party group arrives at Red's ranch and is introduced to Garth, the ranch hand who will witness the night's events. Tension lingers beneath the surface as relationships are tested in the remote setting. The isolation heightens the stakes of every choice.

Jake gets offended and storms off to a nearby barn, where Marlin performs oral sex on him. They argue, and an unseen assailant knocks Marlin out and breaks her jaw with a shotgun. The attack foreshadows the violence to come and strains the group further.

Anxious to find Marlin, Jake takes Red's shotgun and pickup to look for her. He discovers Marlin by a remote lake with a mangled face, and is confronted by Emmet, who kills him and fatally wounds Marlin. The killer is driven by a mix of jealousy and revenge.

Emmet drives back to the ranch, fires fireworks at the group, and triggers a deadly chase. Bird pursues the driver, but Emmet corners him, slashes his eyes with a knife, and stabs him to death. The party dissolves into fear and paranoia.

The next morning, Emmet shoots and wounds Garth as Mandy tends to him. Red and Chloe try to run to the car, but Emmet shoots Red and pursues Chloe. The survivors scramble as the night falls into a deadly manhunt.

In Garth's shack Mandy finds the bloodied knife Emmet used and heads outside to find Chloe being chased. She embraces Chloe, but then stabs her in the stomach, revealing that she is in league with Emmet. The betrayal marks the unraveling of any remaining trust.

Mandy and Emmet discuss a suicide pact, but Mandy reveals she had no intention of going through with it, convinced that Emmet pursued murder to win her affection. Garth intervenes by wounding Emmet, prompting Emmet to stab Garth and continue the chase. Mandy defends herself with a log and ultimately kills Emmet, then escapes with the injured Garth as chaos erupts around them.

A final flashback revisits the railroad track where the group previously paused, with Mandy balancing on the tracks as her future victims look on. The memory underscores Mandy's concealed role and foreshadows the violence that preceded it, serving as a haunting epilogue to the carnage.