Dr. Erich Rojak and his wife Anna are being held in an underground laboratory/bunker by a totalitarian enemy government. Another unfriendly government has sent an assassin, Ventlos, to kill Rojak. The IMF must rescue Rojak and his wife, destroy the test missile Rojak is working on, and stop Ventlos. The IMF infiltrate the base and Jim introduces a handstamp system, unaware that Ventlos has already replaced the bunker's security chief. Jim uses his system to expose security officer Cinnamon as a phony and she is imprisoned near Anna. Willy breaks in via the furnace and rescues Anna while Cinnamon takes her place...

The team must steal a rocket laser and smuggle out Father Bernard and his list of Western operatives. Bernard puts the IMF in contact with Wittstock, who gets them the laser. Wittstock is killed after delivering the weapon and Police Colonel Eckert seals up the country to capture the IMF. Bernard dies of a stroke but gets the list, but nightclub owner Eric Schilling saw Dana with Wittstock and tries to take advantage of the situation to profit. When Barney splits the laser into five parts for the team to smuggle out of the country, Schilling gets hold of Dana's part and the team has to get the part from Schilling while escaping through the heavily-guarded airport. Paris in disguise buys the part from Schilling, leaving him to be captured by Eckert while Paris drops the disguise to escape, leaving the part to be recovered by the rest of the team. Then the IMF secretly blend in with an arriving broadcast crew from England just as the crew are told their visas have been revoked - the IMF