Sheryl Nome lived with her parents, Abel and Sally, on the starship Galaxy. They rebelled against mandatory human enhancing implants, and the government tracked them down. Sheryl was the only one who survived. She barely managed to stay alive on the streets until Grace O'Connor, a talent agency manager, took her in and turned her into a star. Years later, Sheryl enrolled at the Erato Music School, where she befriended the brilliant singer Amagi Lilies. Unfortunately, tragedy struck, and Lilies died while trying to save Sheryl. Determined to honor her parents' sacrifice and keep her promise to Lilies, Sheryl pursued her dream of becoming the greatest singer in the universe by entering the entertainment world.