Who will be voted queen at Shadyside High's 1988 prom? For underdog Lori, competition is cutthroat even before someone starts killing off the candidates.

It's the day after Halloween in 1988 when four young friends accidentally stumble into an intergalactic battle and find themselves inexplicably transported to the year 2019. When they come face-to-face with their adult selves, each girl discovers her own strengths as together they try to find a way back to the past while saving the world of the future.