Best friends Aldo, Pen, and Jasper stumble onto an abandoned orphanage and discover that freeing a houseful of imprisoned ghosts from an angry poltergeist could get them into serious trouble.

Jason Sloane and his seventh-grade friends are the first to sign up for a strange new club that monitors school security footage, but when the new computers show the club members themselves as unlikable high school seniors five years in the future they scramble to solve the mystery.