The Immortal Sun follows Arin, a boy from the sun-worshiping village of Avaril, as the sun stops setting and the world begins to burn. When he uncovers the truth that the priests serve a dying god named Solara—he risks everything to restore balance. Guided by Lyra, he breaks the goddess’s heart to free both light and darkness. Arin becomes the new heart of the sun, giving his life so the world can live again. Years later, Lyra keeps his memory alive, proving that light is not a god to be feared, but a promise to be shared.