Two years after Collette Campbell's apparent suicide in a cabin they used as a clubhouse, Sarah and her college friends prepare for KarmaPalooza, the festival’s return shadowed by a string of unsolved murders from twenty years earlier—seven students slain according to the seven deadly sins. The group—Mona, a social media powerhouse; Liv, an aspiring influencer; L.B., a charming womanizer; Guy, a laid‑back stoner; Will, a slacker; and their newest member, Sarah—feel a mix of excitement and nerves as they head toward the event. Aaron, a drugstore worker with a crush on Sarah, plans to meet them later, adding a splash of potential romance to the night.
A broken tire forces the friends off the road, and when help seems slow, police officer Officer Shaw appears with a practical suggestion: they should shelter for the night at a nearby remote house. Inside, the mood shifts as they discover a table laid with shot glasses themed to the seven deadly sins and a note from “SDSK Management,” hinting at a twisted game to come. The rules are simple, yet ominous: each person takes a shot corresponding to a sin, and the night unfolds with a dangerous mix of secrets and rising paranoia. Sarah drinks Wrath, Mona drinks Pride, Liv takes Greed, L.B. drinks Lust, Will selects Sloth, and Guy accepts Gluttony, with an added twist as Aaron’s Envy is drunk in his absence.
The evening takes a sharper turn when Guy slips away to attend a secret show announced by his favorite band. A masked figure abducts him and takes him to a torture chamber, where the sin of Gluttony is carried out with a brutal poison that violently expels his stomach. The mood darkens further when Mona and L.B. begin to have sex; the killer attempts to strike Mona in the back, but retreats after realizing the couple is recording the moment on a phone. The group, sensing they’re being watched, watches a recording that reveals a masked stalker in their midst. Soon after, taunting texts from Collette Campbell’s phone begin to arrive, adding personal danger to the mounting fear.
Questions about Collette’s identity and past swirl as Will explains that she used to be part of their circle, and Liv hints there’s more to the story—particularly tied to the cabin fire that followed Collette’s death and to Mona’s alleged manipulations of Collette’s fragile emotions. When Liv tries to leave the house, she is captured, and the killer livestreams her torture, an event that ends with Liv being doused with a burning liquid, leaving the fate of what happened open to viewers.
Tensions rise as Sarah argues with Mona about a fabricated bulimia claim used to bully Collette. After a moment, L.B. follows Sarah, hoping to rekindle something, but a brutal stabbing ends Will’s life with a vicious blow to the back of his body and later a fatal assault on Aaron. The suspense peaks when the survivors are lured into the basement, a chilling recreation of the cabin where Collette died. A surveillance setup reveals a disturbing truth: the group’s past harassment of Collette is laid bare through haunting videos, and Aaron admits that the group bullied Collette, a revelation that fuels the killer’s rationale.
The investigation intensifies as the survivors explore shrines dedicated to them and the seven deadly sins. A violent struggle erupts when the killer kills Will and maims Aaron with a series of brutal stabbings. In a bombshell confrontation, Mona unmasks the killer as Officer Shaw, and Sarah uses the moment to sever Mona’s life with a swift cut to the throat. Shaw, battered and betrayed, finds herself forced to watch another video as Sarah reveals her own hidden motive: she was in love with Collette and had a secret relationship with her, while Shaw had become an ally in a plot for revenge against those Sarah blamed for Collette’s death.
The killer’s identity remains tied to a larger web of deception as Sarah and Shaw stage the home to appear as if Sarah were the sole survivor of SDSK’s return. Detectives connect the case to the old SDSK murders, and Shaw contemplates the unresolved questions about who captured the now infamous video of the cabin burning. In a shocking turn, Sarah confesses that she arranged to meet Mona at the cabin to shoot her for publicly humiliating Collette; Collette arrived unexpectedly, and Sarah unintentionally shot her. To cover up Collette’s death, Sarah set the cabin on fire and framed the seven friends as the ones responsible.
Detective Russell Daniels—who investigated the original SDSK murders—recognizes a tattoo on the masked killer as belonging to Officer Shaw and, fearing she could be a loose end, manipulates the situation to force Shaw into drawing her weapon. Believing she’s about to become the killer’s next victim, Shaw is shot dead by the detective. With Shaw gone, Sarah thinks her plan is succeeding, only to receive a phone call from the real SDSK Killer while she rests in an ambulance. The final threat is clear: the SDSK Killer promises to come for everyone Sarah knows, revealing that the past has not finished with KarmaPalooza or with the people who lived through Collette’s tragedy.
In the end, the film lingers on the aftermath of manipulation, revenge, and the dangerous pull of a secret relationship, leaving viewers with a chilling question: who truly orchestrated the night, and what else from the old case might still be lurking, ready to unravel the lives of those who survived the return of SDSK? The tension remains palpable as the survivors—now shaped by guilt, love, and the thirst for vengeance—confront a reality where the sins of the past refuse to stay buried.
