Near Miami evil oil company drills too deep and hits a magma reservoir. The oil rig explodes. Oil company CEOs Jacob Capilla (Brad Dourif) and Ray Miller (Cleavant Derricks) try to cover up the accident, because they were drilling illegally.
Vulcanologist Antoinette Vitrini (Rachel Hunter) plans a field trip to nearby swamp that she suspects to the location of an ancient super volcano. Hence the alternative name “Swamp Volcano!” Her sister Emily (Melissa Ordway) is a student who has a crush on Antoinette’s research partner Brandon (Griff Furst). The results of the field trip are confusing. Also one unlucky student gets left behind and he is boiled in hot water, however no one seems to even notice that he disappeared.
Antoinette’s old flame Dr. Brad Turner (J.D. Evermore) appears and has some news. Brad reveals that Holter oil company is drilling near lava tubes and they have also hacked into Antoinette’s geological data. Then the volcano starts to erupt and hot steam breaks havoc at bikini contest. Meanwhile the oil company bosses twirl their moustaches and pump more oil. Antoinette wants answers and tries to hack oil company computers with a hacking device that is probably the worst hidden spying device in the history of cinema. Oil company sends hired killer Butch Sanderson (Miles Doleac) after her.