February of 2014, Kang Seulgi finds herself thrown in a roller-coaster when her mother sends her away to look after her sick father, who she hasn’t seen in the last three years. She boards the train with little anticipation, prepared for a disastrous year, but that isn’t exactly what Seoul has in store for her.

Soon after transferring to a new school, Seulgi meets a group of four exceptional girls.  It’s not long before she finds out that they are trying to work their way up to the top. While music industry isn’t the place that Seulgi sees herself in the near future, it was a dream for her twelve-year-old self that has been left unfulfilled.

In the midst of getting used to the city and learning to live with her father, Seulgi crosses paths with Kim Hanbin, someone she would never want to be associated with. He’s tardy, nosey and doesn’t take no for an answer. And even though she’s back at the place she grew up in, he’s somehow the only thing reminding Seulgi of her younger self.

What path will Seulgi choose for herself? Will she rediscover her long lost passion for music, or will she fall back into the isolation that she’s been holding herself hostage in for the past three years?