Kang Seulgi wanted to do what she had always found somehow romantic : putting a love letter into her crush's locker. But well, you and I both know how cliché it can get : the letter eventually ends up into the wrong locker...

Seulgi, sixteen years old and coming from a wealthy family, could not call her house 'home' anymore. That was why she decided to run away from it. She then met Irene, seventeen years old, who found herself intrigued by Seulgi, who she thought was just an arrogant brat, and decided to help her.

Irene was only supposed to ask Suho to go on a date with her. But well, things don't always go the way you had planned them, do they ? Especially when a certain Seulgi also happened to be there.

Kang Seulgi wanted to attend hip hop classes since it was what she was the best at. But somehow, she found herself attending modern dance class, wanting to catch the attention of a certain Bae Irene. 

Taeyeon saw Jessica again after years of separation and decided that maybe, just maybe, she should finally let her go... Or try to hold onto her.  

Wendy and Irene met again several weeks after breaking up. They wanted to show they were okay living without each other when they clearly were not. And although they wanted to say many things to each other, they did not say what they really felt. All the more since Irene already had Seulgi to cover Wendy's empty spot in her heart and Wendy had Eric to try healing her.