The year is 1995. For high school sweethearts Max and Lisa, "I love you" means forever, and nothing will ever break that vow. But when Max is murdered, and his death covered up to protect his killers, Lisa prays for revenge; however, sometimes, the devil answers our prayers. Unable to cope with his death, Lisa attempts suicide but is visited by a demon that shows her a better way. Using an ancient curse from the demon's grimoire, Lisa resurrects her slain lover and sends him on a vengeful bloodbath that terrorizes her small New England town.

With her two best friends piecing together the supernatural clues into the gruesome murders gripping their town with fear, and a tenacious lead homicide detective hot on the blood trail of the media dubbed Milford Slasher, Lisa must hide Max from the outside world. But as the body count rises to a crescendo of madness, Lisa discovers that Max's soul will remain trapped in hell unless she can find a way to stop the murderous demon that occupies his reanimated body.

However, the demon chose to strike in 1995 for a reason, using Lisa to help it evolve into the modern world as the internet goes mainstream to execute its ultimate plan for destruction upon the frightened residents of Milford and all of earth's inhabitants alike.

They were brought together by love, separated by murder, and reunited by a demon.