From the liner notes

Cabin Fever (2002)
As a last hurrah after college, friends Jeff, Karen, Paul, Marcy, and Bert embark on a vacation deep into the mountains. With the top down and the music up, they drive to a remote cabin to enjoy their last days of decadence before entering the working world. Then somebody gets sick. Karen's skin starts to bubble and burn as something grows inside her, tunneling beneath her flesh. As the others debate about how to save her, they look at one another and realize that any one of them could also have it. What began as a struggle against the disease soon turns into a battle against friends, as the fear of contagion drives them to turn on each other.

Cabin Fever 2 (2009)
Cabin Fever delivered terror in the flesh, but now your flesh will crawl with Cabin Fever 2: Spring Fever, the bloodcurdling sequel to the hit horror film. Days after a killer virus consumed his friends, Paul emerges from a ditch by a river. Though his body has been ravaged by the virus, he is determined to survive and to warn others of the danger. However, a water bottling plant has already distributed contaminated water to the local high school. The school's students are excitedly preparing for the prom, unaware they're about to have a grisly date with death.

The Descent (2005)
On an annual extreme outdoor adventure, six women meet in a remote part of the Appalachians to explore a cave hidden deep in the woods. Far below the surface of the earth, disaster strikes when a rock fall blocks their exit and there's no way out. The women push on, praying for another exit, but there is something else lurking under the earth. The friends are now prey, forced to unleash their most primal instincts in an all–out war against an unspeakable horror—one that attacks without warning, again and again and again.

The Descent 2 (2009)
Dazed, bloodied and speechless with trauma, Sarah Carter emerges alone from the Appalachian cave system where the events of The Descent took place. Local sheriff Redmond Vaines forces her back underground to help the rescue team which is desperately searching for her five missing girlfriends. As the team moves deeper into the caves, Sarah's flashes of fractured memory intensify and she begins to realize the full horror of the would–be rescue mission. Only Sarah knows the terror which lurks in the shadows of the caves. But they are about to encounter a new tribe of crawlersr—inbred, deformed and even more viciously feral than those Sarah faced before.