After a massive sinkhole swallows a nearby town, a school bus filled with students is dropped deep underground. After the crash, the students realize the bus is hanging precariously against the side of the sinkhole, held in place by a broken pipe. Any sudden move could send the bus plummeting into the darkness below. Alone and with all the adults injured, the teens struggle for survival with the story taking on shades of Lord of the Flies. Their only hope is a small-town paramedic, who must overcome a tragic past to rescue the students.

"Stepfather" Jerry Blake escapes an insane asylum and winds up in another town, this time impersonating a marriage counselor. With a future wife and new stepson who love him, Blake eliminates anyone who stands in his way to building the perfect family.

Pastor Estus W. Pirkle preaches about hell, where all non-Christians will suffer eternal torment. He's also visited by two self-professed “Christians” who don't believe in hell.