Lee Suan is the main vocal of a popular Korean idol group of 7 years, "iridescent". After 7 years of his life as an idol which was filled with rumours of conflict and exclusion within the group, he decides to retire at the young age of 27. After a successful retirement press interview, he comes home and falls asleep while reading the news article regarding his retirement. When he wakes up, he realises that he has travelled back in time to before his debut?!