Im Se-ra is a superstar at the peak of her fame. Go Hee-young, an actress envious of Se-ra's success, harbours a deep hatred toward her. Beneath her popularity, Se-ra endures a pain no one sees. During a call from Dokgo Cheol, a rookie detective, she finds comfort in him. After a car accident leaves Se-ra in a coma, she wakes up in a world that has moved on without her.

When Chung-ja wakes from her coma, she finds herself in a 50-year-old body. Yet, in her mind, she is still the top star, Se-ra. The world, however, has moved on 25 years. Kang Du-won, her former manager, is now the CEO of 2ONE Entertainment, and Go Hee-young has become a famous star. While in the hospital, Chung-ja encounters Dokgo Cheol, and the two immediately misunderstand each other.

When a wallet goes missing at Jumbo Gosiwon, suspicion quickly falls on Chung-ja. Bong Chung-ja and Dokgo Cheol grow closer while searching for the person secretly trailing her. Chung-ja visits her niece to fill in the missing pieces of what happened between her and her sister, Baek-ja. After watching Go Hee-young at her stardom, Chung-ja becomes determined to reclaim her place.