Im Jinah and Lee Changsun were a destined pair, or that's what they thought.

They were both trainees, but under a different company.  Jinah would be joining 

a girl group called ; After School. Changsun was joining ; MBLAQ

Still having their school lives ahead of them, life seemed perfect. Soon-to-be-idols, 

soulmates, and a future together. Well... that is until that one day comes, ruining their relationship.