The foreshadowing of a dark future threatens the seven nations of Sahas. Mai is selected to train with the mysterious elemental master Sah Dohba, who will prepare her to become the protector of the desert lands. Her brother Long steps forward to travel with her as her chaperone to the Valley of a Thousand Thoughts. A mysterious encounter brings them together with Akra, the Starchild. The trio travels on into a battle with the elements. Sandstorms. Deadly creatures. Starvation. Then a chance meeting with powerful earthfollower sets them on a new path where they must each find the strength to face a terrifying foe from the Underworld.

In The Age of Akra, a pilgrimage to the Valley of a Thousand Thoughts brings together four children as an ancient prophecy is set in motion. Having triumphed against dangerous adversaries, Mai, Long, Akra and Sahib are now pursued by the melkarie and must escape to the City of Souls. In the land of Naroan, in a city hidden under a blanket of living green, they are confronted with the challenge to find the Singing Soul. But the underworld has other plans, and a beast so fierce is conjured to stop the children from finding anything that will add to the power to the prophecy of the seven nations.

After finding the Silvershade and escaping the attacking forces as the Wilder Forest city was scorched to the ground, Mai, Akra and Kalin must now face the evil that has consumed Long. When they reach the land of Cruscar and enter the ice city of Algus, the children are confronted with an ice challenge to win an audience with Queen Isolda. A treacherous journey now awaits them if they are to reach the Healing Stone to save Long. But Piceptus, the underworld king, will not give up his search and he will do anything to bring the pilgrims' journey to an end. The children grow stronger as they begin to master their powers, but will this be enough to escape this danger and continue on their pilgrimage to fulfil the prophecy?

With a treacherous ice journey behind them and Long's health restored by the Healing Stone, Mai, Akra and Kalin must now find the falcon guard called Tupuck in the fireruler's city of Calor. It's not long before they discover the city is ruled by a ruthless governor who has captured the falcon guard and the daughter of Ignis. The four children become soldiers in a rebellion and aid in a plan to free the falcon guard and Ignis' daughter. All the while the dark force of Piceptus continues to gather strength. As the children fight in the rebellion, Piceptus increases his position and readies himself to receive an even greater army. Will the information the falcon guard holds help to bring the children closer to fulfilling the prophecy and stop Piceptus from conquering all of the nations?