Thirteen-year-old Genevieve's summer at a frontier family history camp in Laramie, Wyoming, with her parents and brother is filled with surprises, which she reports to friends back home on the cell phone she sneaked in, and which they turn into a blog.

Investigating clues to Amanda's disappearance, Hal, Callie and Nia, accompanied by newcomer Zoe, track down Amanda's sister while dodging a powerful and mysterious group whose interest in Amanda is linked to a dark purpose.