Sarak had been the Deputy Commander of the Federation Government Army an era ago. In the era when the Federation Government held unrivaled power, he was one of the most influential and powerful beings in the Human Universe Sea.
After ascending to the status of a Heavenly God, he, like other powerful beings, due to the restrictions of the "Heavenly God Convention" in the Great Universe Sea, chose to leave the Basic Plane and ventured into the High-level Plane to seek a broader world.
Upon entering the High-level Plane, he realized that his beginner level of Heavenly God cultivation made him rather ordinary in that realm, and his status plummeted off its pedestal.
No longer superior, he had to compete for Cultivation Resources, and due to the limitations of his talent, he managed to ascend only from a First Rank Heavenly God to a Third Rank Heavenly God after hundreds of billions of years.