Kim Namjoon is known as the leader of the famous boy band BTS, they call him RM. Kim namjoon a.k.a RM has a little sister, who is a very talented, and charming girl and lives in the United States. What will happen once her identity goes out into the public? And after she meet the members of BTS? STARTED: JUNE 26, 2018 ENDED: NOVEMBER 18, 2018