Extraterrestrial fast-food franchisers come to earth to pick up food supplies-in this case, human flesh.
After wiping out a few small towns, the aliens must contend with a team of government assassins, headed by Pete O'Herne. As the plot rolls on, O'Herne's crew is decimated in as gory a manner as possible, and innocent bystander Craig Smith ends up being marinated (and a darned good job it is).
Turns out that the space folks are running on a timetable; they've got to return to their home planet with their human-hash cargo before a rival franchise puts them out of business.