In 1993, the Search for Extra Terrestrial Intelligence Project receives a transmission detailing an alien DNA structure, along with instructions on how to splice it with human DNA. The result is Sil, a sensual but deadly creature who can change from a beautiful woman to an armour-plated killing machine in the blink of an eye.

An ex-special services veteran, down on his luck and desperate for work, takes a job as a security guard at a run-down mall in a rough area of town. On his first night on the job, he opens the door to a distraught and desperate young girl who has fled the hijacking of a Police motorcade that was transporting her to testify as a witness in a trial. Hot on her heels is the psychopathic hijacker and his team of henchmen, who will stop at nothing to extract and eliminate the witness.