They were best friends. They were lovers. They were childhood friends.

Hana and Chanyeol used to be the very best friend. Laughing and crying together, fall and rise together.

Chanyeol and Eunji were once a pair of sweet lovers. The girl was such a caring and loving girlfriend while the guy was a gentleman and sweet boyfriend.

Junmyeon and Hana were almost tied the knot. Hana the playful yet nice fiance while Junmyeon was calm and a patient one.

Kyungsoo was Junmyeon best friend and has a thing for Hana. His love for the girl and his best friend are beyond everything thus make him ready to sacrificing his own feeling.