Jo Yuri wakes up one morning with a mysterious envelope on the table. On the same day, she meets one Choi Yena, how will this affect their future? Will she take a leap of faith?

Moondrop is a newbie vigilante of the city, with her own reasons to combat crime. On her first night, she meets the girl who would become her very own damsel in distress.

yena and yuri have spent their whole lives together. so when one day a boy confesses his love for yuri, what will happen? yena's not used to sharing her best friend and seeks comfort from their routine. yena knew that she should’ve been happy for her best friend, so why does she feel so sour inside?   

Yena’s feet are on the ground but her head (and her heart) is in the clouds.