It follows a college student as she boards a party train for Halloween, and ends up fighting for her life when a mysterious assailant begins killing the people one-by-one.

As the #1 social influencer at her high school, Anna is still discovering the advantages and drawbacks of this new status. Home alone, she's determined to gain as many followers as possible, but when the line between real and virtual is getting blurry, the night becomes bloody.

Forced to travel with her boyfriend, Laine, she begins to experience premonitions associated with the urban myth of The Creeper. Laine believes that something supernatural has been summoned - and that she is at the center of it all.