Due to an imbalance in both universes, Kang Seulgi finds herself in a strangely unfamiliar setting, which she believed was a consequence of wanting to disappear. She sets foot in a parallel universe where she encounters people she thought she'd never get to see again. Together, they endeavor to take a turn for the better as they discover friendship and love. 

Growing up together as best of friends, Wendy and Irene attempts to pursue their dream of becoming idols. Everything's going well, not until feelings mixes up with their pursuit of happiness. Would it be the dream they work for? Or the dream they long for? 

 Barely moving on from the bitter truth life slapped her with, Seungwan (Wendy) receives news regarding her friend's death. She was almost out of the dark alleys when she tried to live a normal life, only to be pushed back by an unexpected email. An email that carried facts only she knows how to handle.