Children of the Corn (1984)

As physician Burt Stanton (Peter Horton) and his girlfriend, Vicky (Linda Hamilton), drive across the Midwest to his new job, their trip comes to a sudden halt when they encounter the body of a murdered boy in the road. In trying to contact the authorities, Burt and Vicky wander into a small town populated only by children, followers of sinister young preacher Isaac Chroner (John Franklin). Soon the couple is fleeing the youthful fanatics, who want to sacrifice them to their demonic deity.