Wheein, born Jung Whee-in (정휘인), is a member and vocalist of South Korean girl group MAMAMOO. In April 2018, Wheein made her debut as a solo artist with her digital single "Easy." In September 2019, she released her first single album, Soar.
Five teenage girls, who call themselves Best Friends for Life, use magic to help in their everyday lives and to battle magical creatures, including evil gremlin Simon. The girls must find a way to banish Simon to his prison where he had been before accidentally being released. The show's characters are based on the popular troll dolls that originated in the 1960s.
