A metal band’s dream tour turns nightmarish as their fans are targeted in a series of killings. But when unnatural, horrifying things begin to happen around them, the musicians discover that the murders are the least of their worries.

Thirty years ago, 10-year-old Kris Barlow spent a summer by the lake playing with her imaginary friend. Now, thirty years later, Kris returns to the lake house, only to discover that Violet is still there, and she wants to play.