A dedicated fangirl lands a job at a fashion company, only to discover it was co-founded by her ultimate idol. Determined to remain professional, she hides her identity, but is quickly thrown off course by the company's workaholic CEO. As secret unrequited feelings and hidden personal struggles entangle the trio, she finds herself torn between her lifelong obsession and an unexpected new connection.

It depicts the past of a prominent female forensic investigator suffering from antisocial personality disorder and the process in which the shadow of the father she killed threatens her honor and life.

The series is about an incident that takes place when the owners of the boarding house called 'Guest Summer Palace', which breaks stereotypes, and boarders with secrets gather to find Lee Seol who disappeared 13 years ago.

Based on a novel of the same name, it tells the record of a royal court romance between the King of Joseon who believes his duty is to his country first above love, and a court lady who wants to protect the life she has chosen.

Three sisters, who only have each other and never enough money, get entangled in a conspiracy involving the rich and powerful.