What if one day you will find out something you never wanted to know and your whole life just turns 360°'? YOU  - 19 Years old  - Little Sister of Park Jimin and best friend of Sana - Study in Major of Arts and works part-time in a Coffee Shop MINA - 25 Years old - Best friend of Momo - Cop at Seoul Police Station JIMIN - 25 Years old - Big brother of You