When Baek meets Baekhyun

Identical twin brothers were separated due to unforeseen circumstances when they were toddlers. Byun Baekhyun, the older twin, was hard-headed and straightforward. While Lee Baeksun (formerly Byun Taewoo) was the exact opposite - a sincere and naive child who only sees the good in people.

They were finally reunited after many many years, only to have fate to screw them up once again... they are to live each other's lives.

Lee Baeksun had to take over his brother's role as the main vocalist of a popular idol group, while Byun Baekhyun had to uphold his brother's reputation as a model student in school.

Can they return to their own lives successfully?