The Noble Warriors, or Nomana, are members of a religious community called the Nom. The Nom was formed by a great warlord, Noman, in order to protect their God, The All and Only. The All and Only has many other names: the Lost Child, the Loving Mother, the Wounded Warrior and the Wise Father. The God lives in the Garden, located on the island of Anacrea, until it is destroyed, when we find that there are multiple gardens.
The Noble Warriors do not use weapons or armour; they use only true stength, which is also called Lir. The vow of the noble warriors (which Noman wrote) says they cannot fight long wars or conquer land or empires. They cannot love any person above all others, build a lasting home, possess anything but can only use their powers to bring freedom to the enslaved and justice to the oppressed.
Seeker's father is the headmaster of the school on Anacrea, and wants Seeker to follow in his footsteps, forbidding him from applying to the Nom. However, when praying Seeker hears a voice telling him the 'door is always open' and that he would be the one to save the Lost Child. This confirms Seeker's belief that he will join the Nom. However, Seeker ventures a little further into the monastery and sees Blaze seemingly being cast out of the Nomana, undergoing a process of his memories being cleansed. He speaks to several monks, and they inform him that Blaze is a traitor! Seeker cannot accept this, and feels that this is why he is later rejected by the Nom.
Seeker, Morning Star, and the Wildman all make their way to the Nom to apply to join, and inevitably all three are turned away. But not relenting, Seeker decides to find another way to enter the Nom; he will perform an act of notable good, and hopefully be invited to join. The trio go to the City of Radiance, where a weapon is being constructed, with the purpose of destroying the Nom. Seeker has the intention of destroying the weapon by pretending to want to be its bearer.
The nature of the weapon is explosive. Basically, the power of the Sun is stored in water, leading to the name Charged water. The energy in the water is released when it comes into contact with air. It is planned that the bearer will have the normal water in his blood replaced with charged water, and will sacrifice himself to destroy the Nom.
However, Soren Similin, who is in charge of building the weapon (but none of the scientists working on the project realise this), and who is also the secretary of the leader of Radiance, has found another candidate to be the weapon bearer; Seeker's brother Blaze. Along the way Similin encounters Morning Star's mother, (who was in fact rejected by the Nomana, and fled in disgrace) and she tags along with him and Blaze on their way back to the City of Radiance. Both Blaze and Seeker come to the place where the weapon is, and both help to destroy it; Blaze having not really been cleansed. Morning star is re-united with her mother, and the trio are accepted into the Nom.
Radiance is similar to the lost city of Atlantis. The inhabitants are sun-worshipers who worship a god who is a beautiful golden-haired youth who's hair represents the sun. This god is an accurate description of Wildman, Seekers friend.