In Seoul, Lizzy joins a group of hopefuls from around the world, including Jojo, Maya, Aliyah and Yumi, as they undergo the intense training regime of the K-pop industry, competing to make the final line-up. She is guided and tested by Kevin Park, played by the singer Eric Nam, while trying to keep her participation secret from her family. Shot entirely in South Korea and produced by Hybe America, the company behind BTS, the film is a coming-of-age musical drama, with a cameo appearance by the K-pop group ILLIT. Ji-young Yoo plays Lizzy.