Lee Ji Hoon and Choi Woo Seung are two childhood friends who also happen to be preparatory students for the civil service exam, although Ji Hoon has a secret dream to be a singer and songwriter. One day they meet Yoo Hyun Jae, a popular but problematic member of a popular '90s idol group who accidentally traveled through time to the year 2017 from the year 1993. Thus begins the story of passion, love, and friendship among 20s youth in the entertainment industry
