In the entertainment industry of 2025, the idol industry is highly developed, and the new boy group "NOCTURNE", which debuted in the draft, has risen rapidly with its incredible appearance and stage performance. The lead singer Jiang Yan fell into a coma due to a car accident. When she woke up, a soul from a parallel world lived in her body - Lin Ruoxue, who was originally a top female star.
- Lin Ruoxue (Jiang Yan): On the surface, she is a new idol, but in fact she is a fishing queen who is well versed in the rules of the entertainment industry. He is good at vocal music and dance, is proficient in six languages, has a doctorate in psychology, and carries a voice recorder with him to record secrets.
- Lu Chenzhou: 32-year-old top actor, winner of three consecutive Academy Awards. He is a cold and arrogant lone wolf and suffers from severe insomnia. The only thing that can make him sleep peacefully is Lin Ruoxue's singing. He has a childhood bond with Jiang Yan and is investigating the truth behind the fire in the orphanage that year.
- Ji Ran: 28-year-old creative genius, the youngest three-gold singer in the Chinese music industry. The seemingly cynical playboy actually suffers from an affective disorder. He perceives emotions by writing songs and secretly collects every album of Lin Ruoxue.
- Shen Yanzhi: A 30-year-old national producer who controls half of the entertainment industry. Suffering from prosopagnosia, the only thing that can be clearly distinguished is the color of Lin Ruoxue's pupils, and there is a bigger conspiracy secretly planned.
