Jieun is in love with the man of her dreams. Jihoon has finally found his match. However, they want different things..will it work? Or will it be game over? **Oppa! is the sequel to Sunbaenim!, do check it out first, if you want :)

Jihoon is the world-famous sunbaenim who has a legendary hallyu wave legacy, while Jieun is that successful hoobae who's been conquering the charts for years.  They are also the worst hidden enemies within the kpop industry. As fate would have it, they have to complete an album together. Will it be World War 3, or will sparks fly?