Lay’s health threatened him to go back to China. The others want him to leave while he, on the other hand will give up on anything to stay.   Angst-filled heartbreaking story of Lay who is going to leave and the fight of one woman who forces him to leave when deep inside she is hoping she can make him stay.

One cold midnight, a beautiful girl came by with unknown identity. She said her name was 'HANA'. Her identity was unknown until the next morning when the Red Velvet girls found out that she was...   'Hana'   Featuring Red Velvet: Irene/Joohyun Wendy/Seungwan Seulgi Joy/Sooyoung   and Hana (OC).