Doomsdayer (2000)

An international anti-terrorist organization has a mission to track down weapons of mass destruction before they fall into the wrong hands. They discover the existence of a powerful weapon called the Doomsdayer, which is capable of triggering the meltdown of every nuclear power plant of Earth. Mission specialist Jack Logan (Joe Lara) is assigned to travel halfway around the world to find Max Gast (Udo Kier), the owner of this terrible weapon, and track him until he can locate the device. But the device has already been activated and the seven-days countdown has begun.