Having a happy relationship together, their sweet moments didn't exactly last. Something went wrong but what happened exactly? This story takes place in the Wind Flower MV so please watch that to understand some of the visuals.
Time, distance and circumstances kept them apart.
Seasons change and they also did, but did their feelings stay the same?
Can Moonbyul and Yongsun keep and fulfill their promises? Or promises are really meant to be broken?
What if someone from their past comes back as well?