When there is an accident that causes the death of BTS member Taehyung, the members all undergo serious changes.  Especially the vocalist Jimin, who was the only person with Taehyung in the moment of his death.  Due to guilt and sadness Jimin takes a hiatus from the group and falls into a depression, only leaving his home to check the mail.  But when Jimin is introduced to  Y/N she challenges him to fight his depression and get his life back together, and the two fall in love in the process.