Sugar was adopted by the Millers but got abused and regarded as a demon due to her supernatural abilities. Actually, she was the granddaughter of Lord Underworld. Her dad knew about Sugar's background and rushed to find the Millers. By then, Sugar had been sold to a research institute. Her dad rescued Sugar in time and brought her back home. Sugar cured her Grandma, helped Uncle Chase stand up, and resolved the crisis of Uncle Jasper. Finally, she smashed the scheme of Lord Julian and reunited with her Grandpa, Lord Underworld.