THE SLIME PEOPLE

The film concerns a race of subterranean reptile-men (dubbed "slime people", due to their slime-covered skin) who create a wall of "solidified fog" around Los Angeles using a strange organic-looking machine and proceed to invade the city after they are driven out of their subterranean homes by underground atomic tests. A pilot (portrayed by Hutton) lands in Los Angeles after some flight difficulties and finds the city almost deserted. He later encounters other survivors, including a Marine separated from his unit, and a scientist and his two daughters, and the group try their best to halt the further invasion of the slime people who are attempting to use the fog to not only isolate the city but also to lower the surface temperature enough to let them function at all hours of the day. Eventually, near the end of the film, the survivors find that while the slime people are otherwise immune to conventional weapons due to their body's ability to quickly seal wounds, the creatures can be killed with their own spear weapons as they are hollow and prevent the wounds they inflict from closing properly. They also realize the reason the plane from the beginning of the film was able to land was due to the chemical making the fog reacting with the salt from the ocean water thus preventing the section near the sea from solidifying. With these facts in mind, the survivors then attempt to escape the city using several buckets of a saltwater solution to try and make a hole through the fog wall, however, when this fails due to them not having enough of the solution the group instead opts to destroy the machine generating the fog. With the machine destroyed, the fog quickly disperses allowing the military to enter the city and causing the slime people to die off from the rapid rise in temperature.

The survivors destroy the machine generating the solidified fog, dispersing the barrier and allowing the military to enter the city; the slime people die off as the temperature rises.

The conclusion sees human ingenuity triumph through the destruction of the fog machine, which removes the monsters’ environmental advantage. By dispersing the fog, the city is freed, and the rapid temperature increase proves fatal to the slime people. The ending underscores a classic B-movie theme: teamwork and scientific know-how can overcome even the most bizarre threats, restoring normalcy to a city besieged by the strange.