Dash and his crew might have stumbled upon the source of the evil at Black Sand Beach when they stumbled into the abandoned and haunted lighthouse, but when Lily reveals that she found Dash's journal there, the news is anything but comforting. The book is full of Dash's reflections on his trip to Black Sand Beach the previous summer. Only Dash doesn't recognize the journal or have any memory of being there. As the friends read the entries aloud, through flashbacks of Dash's unsettling encounter with two ghost girls, a truly terrifying monster, and a life changing event make one thing very clear: Black Sand Beach isn't done with them yet.