Max Cartwright is a high school student mourning the loss of her mother, Amanda, a former actress known for her role in a 1980s cult slasher film called "Camp Bloodbath." On the anniversary of her mother's death, Max reluctantly agrees to attend a special screening of the infamous movie. During the screening, an accident occurs, and Max and her friends find themselves mysteriously transported into the world of "Camp Bloodbath." Confused and frightened, they soon realize they are trapped inside the film's narrative, complete with its iconic killer.

As they navigate their new reality, Max and her friends must rely on their knowledge of the slasher genre to survive while interacting with the movie's original characters, including Max's mother as her on-screen persona. The group faces many challenges as they try to alter the film’s plot to find a way out. Tensions rise as the lines between fiction and reality blur, forcing Max to confront her grief and come to terms with her mother’s legacy. The journey becomes a race against time and a test of their resourcefulness as they try to change their fate amidst the relentless danger that stalks them.