Critical Mass is a 2001 DTV Die Hard rip-off which reuses footage from blockbusters such as the Jean-Claude Van Damme film Nowhere to Run and Arnold Schwarzenegger blockbuster Terminator 2: Judgment Day. It is directed by Fred Olen Ray (under the alias Ed Raymond) and stars Treat Williams, Lori Laughlin, T.J. Thyne, David 'Shark' Fralick and Udo Kier.
Terrorists plotting to steal radioactive material create a bomb to carry out the demands of their leader.
Jeffers works security at a nuclear power plant. The plant is being decommissioned, and a politician is touring the plant and videotaping his comments regarding the closing. A terrorist group led by Samson gets inside the gates, with their ultimate goal the detonation of a nuclear bomb inside the plant. After local policemen and the other plant workers are killed, Jeffers and Janine alone must confront and halt Samson and his terrorist squad.