Jeepers Creepers (2001)

A college-age brother and sister get more than they bargained for on their road trip home from spring break. When the bickering siblings witness a creepy truck driver tossing body bags into a sewer near an abandoned church, they investigate. Bad move! Opening a Pandora's Box of unspeakable evil, the pair must flee for their lives -- with a monstrous "shape" in hot pursuit.