In the chilling horror film "Metabolizer," directed by Owain Collins, a routine medical trial spirals into a nightmare of body horror and psychological terror. The story follows a group of desperate individuals, including the determined Kiera Nusbaum and the skeptical Jackson Yaeger, who volunteer for a cutting-edge weight loss treatment that promises to revolutionize metabolism. As participants begin shedding pounds at an alarming rate, they soon discover that the experimental therapy has a monstrous side effect: their bodies are now metabolizing more than just fat. Led by a charismatic but secretive doctor played by Erin Thompson, the volunteers find themselves trapped in a sterile facility, where their own flesh and blood become a target for a ravenous, unseen entity that feeds on their transformation. With time running out and paranoia spreading among the group, including the resourceful Nolan Kirkman and the terrified Dan Nissila, they must uncover the dark truth behind the treatment before they are completely consumed. This taut, thirty-one-minute horror experience delivers relentless suspense and visceral scares, exploring the terrifying cost of perfection.