The main character of One Must Fall is Karen, who is a hard-working and dedicated woman. She is devastated when she is wrongfully fired from her office job, and is forced to take on a temporary job with a crime scene cleanup crew.
Karen soon learns that her new job is not only physically demanding, but also mentally traumatizing. As she and her co-workers are tasked with cleaning up the aftermath of brutal murders, they soon discover that a maniacal serial killer is on the loose, leaving a trail of corpses in his wake.
As the body count rises and the killer becomes increasingly brazen, Karen and her team begin to suspect that he may be hiding among them, disguised as one of their own.
The film is set in the 1980s, and pays homage to classic horror movies of the era with its retro visuals and soundtrack. However, it also injects humor and lightheartedness into the mix, making it a horror-comedy that will not only scare viewers, but also make them laugh.
Overall, One Must Fall is a thrilling, entertaining, and occasionally gruesome slasher that puts a new spin on the traditional horror formula.