It was a simple day for a cop. Investigating cases and finding clues that will lead to the culprit. But not  today for Kang Seulgi. The famous bear cop. Instead of solving cases, she was ask to come with her co-workers to raid a club. The said club is a illegal. They don't have a permit to operate the club. The club had a minor and force worker that working their. That's Seulgi hate the most. Being force.

That's why her parents let her be whatever she want. Her parents, Yuri and Jessica was a famous owner of a clothing brand which is YS corporation. People asking why their second daughter don't follow their path like her sister Yoona. And they will that "we want to give her the freedom to choose since her unnie already happy to help us in the company" and that's what Seulgi love about her family.

Meanwhile, the friend of Yulsic couple, Taeyeon and Tiffany is devastated because they can't find their second daughter who being kidnapped in the nursery of the hospital Tiffany gave birth. The invistigation said that a person that disguise as a nurse got the baby. They thought that it will only be a kidnap for ransom that's not the case. 28 years had past and their still no progress in finding their second Joohyun.

Which also make their first born to get mad at the hospital security for not doing their job properly. Gor her. She wait for too long to have a baby sister. Her happiness in knowing her mother is pregnant became exasperation.

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It is past 10. 5 kilometers from the police station Seulgi is working on. The club got a lot people already. A girl dancing on the stage wearing a lingerie, drinking with the old rich man, people ordering in the counter. But there's a girl serving a drink to one of the table that looks uncomfortable because the man keep touching her legs.

Her name is Bae Irene. A orphan since when she's 16 years old. The one she knows her parents got into an accident because of driving while drunk. Since she has no one to live in. She decided to find a job. Her first job is a waitress in a coffee shop. She last their for 5 years until she met a guy name Park Bogum. The owner of a club. He said to give her a much bigger salary just to work for her as a waitress. Irene thought it will only a simple serving of drinks and food but she thought wrong. She need to wear a revealing clothes and even sometime sit with that old rich mens. She hate the fact that she need to that just to survive living in this cruel world. Unti now. 7 years had past since she start working their she still regret working their