Kang Rakwon, a former idol turned entertainment agency CEO, hears the news that Lee Dowoon, his former teammate, has taken his own life.
Ten years ago, their group Delight disbanded because of Dowoon’s betrayal — so Rakwon attends the funeral with a mix of resentment and sorrow.

While dozing off at the funeral, Rakwon suddenly wakes up twenty years in the past.
But even then, the members have already begun to drift apart—

“Hyung, everything’s so easy for you.”
“Leave me out of it. I don’t want to sing anymore.”
“I... I don’t even have that kind of talent. It doesn’t make sense, for me to sing the song I wrote...”

Determined to prevent the group’s breakup and stop Lee Dowoon’s tragic death, Rakwon struggles to change fate.

A story of three dogs — master and servants alike — fighting their way back to the top of the idol world.