In the world of floating islands in the broken sky, the ace cloud whale rider Renn embarks on a dangerous journey to find the legendary holy land "Pure Land" to save his terminally ill sister Leah. However, the news of the "Pure Land" attracted the covetousness of all forces. In this cruel aerial race, Ren gradually discovered that the "Pure Land" was not a simple place of healing, but the last hope related to the survival of the entire world. He must make an eternal choice between the lives of his loved ones and the future of the world.
