Join Adam and Sophie Blake as they attend Chillsville Elementary and begin to question the spooky sights and sounds in the hallways of their new school.

Twins Adam and Sophie Blake think everything about their new school is creepy…. The other kids have strange names—like Frank N. Stein and Berta Graves—and their new teacher, Ms. Wolf, gives science lessons about killer ants and bats. Not to mention, the class pet is a huge, hairy spider! But their old school was never this exciting…

Just as the twins begin to think Chillsville Elementary is a cool school, they start to see spooky shadows and hear howling in the school’s empty tower. Soon Adam and Sophie start to wonder if it is really a ghoul school?