Jack assists a rebel group known as the Tunnel Rats, who desire to overthrow the villainous Lord Caliban (Clabe Hartley).

To stop the Trancers of this world, and return himself to his own dimension, Jack must quest to find the mystical Diamond in the Castle of Unrelenting Terror, an item which Lord Caliban is also hunting.

[3] TV Guide gave the movie two stars, saying the sequel does as well as can be imagined and praised Thomerson's acting, calling him an "underappreciated physical comedian".

[5] Full Moon Entertainment moved its studios to Romania as post-Soviet film tax incentives were too great to resist.

It was filmed at the same time as Trancers V. The stunt work was noted as impressive, and obtained much cheaper by local talent than would cost in America.