A poison arrow. A prophecy of two sisters. A journey into the heart of the resistance.

While Isika is preparing for her future role with the Maweel, members of the Karee tribe come to ask for help with the problem of masses of disappearing people. Meanwhile, Aria grows weaker daily from the poison arrow lodged inside her, and time seems to be growing short.

A disturbing Karee prophecy might contain more answers, and as Aria is pulled deeper into the Desert King's trap, Isika races to find a healer who might be able to save her sister. In the most dangerous places, she finds more help than she expected, and the group of friends grows and changes as the Resistance enfolds them all.

Isika has resisted the power of the Desert King, but will Aria fall under his sway?