Everyone loves the Moster Mash, and it has become a frightening part of induction for teens in Webster Parish, Louisiana. Where girls are being abducted or drawn into an irreversible transforming process of becoming monstrous beings. The Second adventure in the Girls Ghost Club, this mystery strikes at their own members and threatens to pull them into a power beyond themselves. As a Halloween Carnival comes to town and kids who come up missing are recruited forever to be a part of the Hall of Horrors. Only the members of this conundrum solving group can unravel this haunting plot and stop the Power Bearers behind it who auction off monsters and people for a profit. Hold on to your masks, because what’s underneath is coming for you.