Red Velvet were like a heart of glass. Without one they weren't complete. At least that's what Seulgi thought before she shattered. Sometimes a broken glass can be molded back together ... Wendy loves Joy with all her heart. Before she realises that Joy is not happy.    

Seulgi has had a crush on Joohyun for a long time. Unfortunately it will continue to be just a crush. A dream that won't come true. That is until a mysterious notebook appears that promises to make Seulgi's dreams come true. Sounds like a perfect deal, right?   However, it isn't as perfect as it seems.

Joohyun is a famous singer, Seulgi is her assistant. Feelings spark between them but there are obstacles in their way.