Quija. It's only a game, isn't it?

Tory Vonburg a 14 year old girl from California, didn't like her school at all. So they moved to Evansville, Colorado. During the 7 hour drive her sister Tessa gets mixed up into a car crash, taking her life. As Tory moves to her new home she finds a friend that has an old quija board. So why not? Tory and Merissa try to talk to Tessa ( Tory's dead sister) and they find out she hadn't left earth yet. What will happen next?