Written in Water - Elizabeth Schechter

Out of the dreams of the Mother Goddess came the four tribes of Adavar, each born from of the elements. And since the beginning, the tribes of Adavar have been ruled by the Firstborn, the descendants of Axia, the firstborn daughter of the Mother Goddess. And as Axia had her four companions by her side throughout her life, so to does the Firstborn have their Companions, chosen one from each tribe, so that each tribe has a voice. On the day that the Firstborn takes the throne, their Heir is chosen by the Mother Goddess herself, and no one would dare to challenge that divine choice

Until the usurper Mannon turns on Firstborn Tirine, her Council, and Milon, her Heir, stealing the throne of Adavar and throwing the world into chaos.

Twenty-five years later, Waterborn Aleia and her mate, Earthborn Jehan, survive alone far out at sea, maintaining little contact with the Water tribe. It is the only life their son, Aven, has ever known.

Then the storm comes, driving a storm-damaged ship into the deep waters. The only survivor on the deserted ship? A girl with wings, who Jehan and Aven discover unconscious and imprisoned in the hold. When she wakes, she knows Aleia and Jehan on sight, and what she tells them turns Aven's life upside down.

Her name is Aria.

She is Milon's daughter.

She is the Heir to the Firstborn, charged by the Goddess to take back what was stolen.

And Aven is her first Companion.