All of those 1 and 2 star reviews about this movie? BELIEVE THEM. HEED THEM. This movie really is that bad.
The direction, the plot, the editing, the acting... all are abysmally bad. As is the case with most low-budget horror movies, the are gaping plot holes. The story revolves around a debate team on the way to a national level competition. They're supposed to travel in a Class A RV, but the company that contracted the transportation is run by a shyster, and he shows up in a marginally renovated school bus.
Along the way to the national meet, the group stops to eat. While they're in the restaurant, some invisible entity boards the bus and rifles through everyone's belongings, making a mess. The shyster bus driver blames the character, Carlos, for leaving the door to the bus open, even though the driver was the last one off of the bus.
Everyone else joins in and plays the blame game with Carlos, even though he was with everyone the entire time that they were in the restaurant. He went from table to table annoying all of the others. Everyone saw him in the restaurant. No one saw him leave at any point. He has literally a dozem alibis who can attest to his whereabouts when the bus was vandalized... and everyone blames him anyway.
Perhaps this is due to the fact that Carlos is arguably the most annoying, biggest dork in the history of cinema. Carlos is that little dweeb that thinks that he's endlessly charming and irresistibly cute, but he's an uncharismatic cretin. He's the alternate member of the debate team, and oh yes, he's an amateur ventriloquist... a very, very, very bad ventriloquist.
Then there's the girl who looks to be all of 19 years old, but who somehow did two tours of duty in Iran as a soldier before attending college and joining the debate team. When did she enlist, when she was 12? She was in the Army, and attests to this by cheerfully exclaiming "Semper fi!", which is a Marine Corps credo, not the Army's.
The movie jumps back and forth in flashbacks specific to each character, foreshadowing of things to come. At one point in the movie, the bus driver hits something invisible with the bus, and when he investigates, he finds some sort of slime or ectoplasm all over the front of the bus. He touches it, and cuts himself in the process. That's right, he cuts his hand on slime, and we all know how razor-sharp that slimy goop can be.
Then we have the poor man's Mulder and Scully, local detectives who fear that the government is going to step in and quash the investigation into what happened to the missing people who were on the bus.
As for the trip, it somehow takes two full days to drive from Key West, Florida, to Birmingham, Alabama. Two full days. Recently, I drove from Detroit, Michigan, to Venice, Florida in a little over 19 hours. Not two days, 19 hours.
As this two days tour rolls on, the bus is plagued by increasingly violent attacks. After one such attack, they hear on the bus's CB radio that a nearby RV is under attack by some mysterious entity... and it's all downhill from there. This movie is galactically beyond awful, the true mystery is how it was ever made to begin with.