Sorin an aspiring idol whose dreams were dashed after a traffic accident. She works at COA Entertainment, global star Luice’ management company. Due to a scandal, Luice’s career goes up in smoke and commiserates with Sorin where they then fall for each other. Meanwhile, Sorin’s best friend Siwoo realises his own dream of becoming a K-pop idol and debuts as a member of a boy group under the same management company.

At a difficult place in his marriage and career, a middle-aged man gets a shot at a do-over when he's transformed back into his 18-year-old body.