When five teen employees at the local movie theater in a small Christian town discover a mysterious old film hidden in its basement, they unleash an alluring succubus who gives them a sex education...written in blood.

当当地一个小镇的电影院里，五名青少年员工发现一部神秘的老电影藏在它的地下室里时，他们释放出一个诱人的苏布斯，给他们性教育......写在血液。