Twelve-year-old Alexa and her companions unwittingly lead Abaddon, now in the form of an enormous, horrible sea monster, to the secret community known as the Five Stone Pillars when they go to bring the people living there home.

Although housebound following an eerie accident, teenaged Ryan continues to investigate the strange occurrences in his hometown of Skeleton Creek, recording his findings in a journal and viewing email video clips sent by fellow detective Sarah. The reader may view Sarah's videos on a website by using links and passwords found in the text.