Bill Chrushank, a criminal psychologist, loses his arm in a car accident and undergoes an experimental surgery to have it replaced with a limb from a deceased donor. While initially grateful for the successful procedure, Bill begins to experience alarming changes in his behavior and eerie flashbacks that feel like memories. As his mental state deteriorates, he begins to investigate the origins of the donor's limbs, discovering they once belonged to a violent murderer.

Haunted by the fear of being influenced by the donor's malevolent tendencies, Bill delves deeper into the circumstances of the donor's death and encounters other recipients experiencing similar disturbing changes. As tension mounts, Bill's personal and professional lives spiral out of control. Driven by his quest for answers, he battles against the growing influence of the donor's murderous impulses, racing against time to save himself and those around him from potentially deadly outcomes. The story builds to an intense climax as Bill confronts the dark forces overshadowing his life.