The film begins on a playful note, as a group of children come together for a slumber party filled with laughter and joy while they engage in a game called Seventy Five. The objective is light-hearted: prank call unsuspecting strangers and keep them on the line for a thrilling 75 seconds, spinning outlandish tales as they go. However, when the night wraps up and the children retire to their beds, they remain oblivious to the fact that one of their recent victims is lurking nearby, fueled by feelings of betrayal. This dark figure, emerging from the closet, makes a brutal attempt to murder one of the kids, only to be interrupted by a parent. Tragically, the killer has already left a trail of absolute horror behind, taking multiple lives and causing unparalleled panic.
Fast forward ten years later, we meet Chuck, portrayed by Josh Hammond, who takes a tragic turn as he meets his end in his own home. Detectives Anne Hastings (Gwendoline Yeo) and John Criton (Rutger Hauer) are brought on to investigate. They quickly discover Chuck was one of the few survivors of the infamous Waley murders a decade earlier. As they dig deeper into the case, they realize a disturbing pattern is emerging: other survivors from that fateful night are also being hunted down.
Meanwhile, Brandon, played by Jonathan Chase, is preparing for a gathering at his family’s isolated estate, hoping to reignite a romance with his ex-girlfriend, Karina (Judy Taylor). However, she brings her friends along—Marcus (Brian Hooks), Roxy (Cherie Johnson), Shawn ([Germán Legarreta]), Kareem ([Antwon Tanner]), Scott ([Wil Horneff]), and Jody ([Aimee Garcia])—unaware they are stepping into a nightmare. The clock is ticking as one by one, they encounter chilling moments that seem straight out of their darkest fears.
As tension mounts and the party continues, Brandon and his friend Cal (Austin Basis) decide to give their guests a tour of the grand estate. They highlight its intriguing background as a former reality TV show location, pointing out hidden cameras monitoring the festivities, thus introducing an unexpected layer of voyeurism to their gathering. Meanwhile, the detectives continue to pursue their leads in the Waley case, discovering Melissa’s lifeless body along with another gruesome finding—a male victim in a different part of the house. Oblivious to the horrifying events, the partygoers indulge in their celebrations.
As the night unfolds, Marcus suggests reviving their childhood game of Seventy Five, eagerly embraced by the group. But as they dive into the game, one call spirals downhill, erupting in screams and chaos. A sudden dread fills the air; no one dares answer the phone or confront the dark reality they are hurtling towards.
As the celebration winds down, Karina and Brandon share a poignant moment, trying to reconnect amidst the chaos. Just as some guests decide to remain, tragedy strikes once more as Becky ([Ellen Woglom]) meets her end, followed by brutal murders that claim both the boys and Julie ([Soraya Kelley]).
Just as panic begins to grip the gathering, Kareem stumbles upon a horrifying scene, driving him to rally Roxy, Marcus, and Anna ([Denyce Lawton]) for a frantic escape. The group frantically splits up to disseminate warnings, yet Marcus and Anna inadvertently encounter Jody and Cal, only to find themselves face-to-face with the lurking killer, who quickly claims Anna as another victim.
As survivors scramble for safety, they cluster into Brandon and Karina’s room, locking themselves in as the horrors outside escalate. Tensions rise while accusations fly between friends, particularly when Brandon blames Marcus for their plight, igniting a fierce confrontation.
In an attempt to retrieve car keys, Brandon and Karina leave the safety of their room, only for the darkness to claim Brandon, who is ruthlessly attacked from behind. In the midst of the chaos, Karina is nearly thrown off the balcony but barely manages to evade slaughter by hiding in the monitoring room. Meanwhile, Marcus and Kareem find out that Scott is bleeding over Roxy's lifeless body, pushing them all to face a desperate fight for survival.
As mayhem engulfs the estate, Marcus and Kareem wrestle the killer under control, but in a shocking turn, Kareem pleads with Scott to deliver the final blow only to face a tragedy of his own—victimized at Scott’s hand instead. Marcus runs to the monitor room alongside Karina, where they witness the shocking demise of Jody and Shawn, helpless as horror unfolds before their very eyes.
It becomes painfully clear that the past is not just a haunting reminiscence; it’s a living reality hellbent on destruction. Meanwhile, Scott appears in the monitoring room alongside a figure previously unknown—Kyle Turley (actor name), emerging as a former inmate who escaped a mental institution. He reveals himself to be William, Scott’s twin brother. This revelation triggers a cascade of unravelling truths about family tragedy and betrayal that had long been buried.
In a whirlwind of rage, William turns against his accomplice, stabbing him before shifting his focus to Karina and Marcus. What began as a struggle for survival morphs into a chaotic confrontation, leading to Karina's tragic end at William's hands. With the axe still gripped tightly, Marcus stands ready to annihilate William, but in a cruel twist of fate, Detectives Hastings and Criton storm in, mistakenly believing Marcus to be the assailant. Just when it seems the truth will finally come to light, a dire threat arises—the accomplice rises again, wielding an axe, ready to strike at the detectives in a calamitous climax of fear and suspense.
