Jerry Harford认为老婆背着自己外遇，他最好的朋友鼓励他以眼还眼，但却导致不堪的恐怖后果。Jerry开始陷入一个没有终点的超自然恶梦，好似暗黑版的《致命的吸引力》（Fatal Attraction）。

　　A group of teenagers inspired by a high school "Create Your Own Urban Legend" project quickly get out of hand in their desire for more "likes" and going viral with deadly consequences.