Just a normal day at school until the science teachers experiment goes wrong and causes mayhem around Seoul which leads these group of high school students to defend themselves and seek for safety in Busan which is miles away from the school will they all make it out alive wait and see there adventure begins

Your the little sister of Kpop idol Seungmin from straykids and you and your best friend decided to audition for the new coed group that Jyp was creating.