You never know what's going to happen in your life. It can take an unexpected turn at any moment. One day, your life seems normal, the next it totally changes.

That is what Kim Eunmi went through that summer when her mother married a restaurant owner and moved to Seoul. A new house, a new school, a new family, a new life. She had no problem with any of those things, as long as her mother is happy.

Except one.

Lee Taemin.

Her annoying stepbrother who loves to bother and . His favourite hobby: making her day miserable.

But at the end of the day, both of them are family and are there for each other. When something horrible happens, both of them can put aside their differences and work together.

Right?

Eunmi has always been close to her little brother, Jongin. But even he's been acting odd lately. He's become more secretive and even more reserved- if possible.

So how will life turn out for the singer, the dancer, and the jerk?