Summary:

Jung Eunji has everything a girl could want: an idol life, promotions, showcases, dramas, commercials, and a secret boyfriend.

With the perfect life and endless opportunities, Eunji dazzled all of the people around her – that is, until 2013.

During that year, something changed.

Eunji was no longer as bright as she usually was.

She no longer felt confident and little things began to change – her interests, her habits, and her likes.

Jung Eunji was no longer Jung Eunji.

She was replaced by Jung Hyerim, her twin sister.

But it's no secret to Hyerim that there was something wrong with Eunji's life.

She just couldn't quite figure out what it was.

After all, she was just a shadow of the missing Jung Eunji.