The devils continue to come up with new ways to hurt Lilly at school. This time they think they found a way to throw a car at the school, right into her classroom.
Surviving getting a car thrown at her is nothing compared to what comes next. Lilly has to help the spirit who died in the car accident cross over. That spirit has a troubled past and listens to the devils more than the angels.
On top of everything, Lilly has to do all this without Megan's help.