Plot

While traveling down a desolate road, Maria (Ann Henson) stumbles upon an apparently abandoned school bus. A girl has written "Help me" in one of the windows, and Maria quickly discovers the messy secrets that lie in the back of the bus.

On a desolate road, an abandoned school bus with the words 'HELP ME' written on a window, Maria stops to check it out. A killer has left his bloody crime scene in the back. The killer comes back and takes Maria for a ride to a desert location. But is the killer really her enemy or is it someone, or something else?—dchispirtle

A young woman is travelling down an isolated country road when her car gets two flat tires. She sees an old bus with the words "help me" apparently written onto the window with blood. She gets onto it to investigate it and finds a lady chained to a seat with a mask around her head. Before she can get off it a man drags another body onto the bus and drives off with her still on it. She winds up the next day at this castle in the middle of nowhere and spends the rest of the movie trying to escape the cannibals who live there.

--While driving down a dark country road, on her way to a night alone in a cabin with her boyfriend, Maria (Ann Henson) spots what appears to be an abandoned black bus on the roadside. After looking at it more closely she sees the words "Help me" written in a dark red substance on the rear window. As she is about to leave, her front tires go flat. Curious, alone, and terrified, Maria goes aboard the bus. As she looks around, she finds a masked woman chained in the back of the bus, but a man boards the bus dragging a body before she can depart. After falling asleep on board, she wakes up to find that the bus has driven into the middle of a desert, towards a castle full of hungry people, and she discovers that she and the other people (both alive and dead) aboard the bus are the inhabitants intended meal.