Season 1 of Queen of Mystery premiered on April 5, 2017.

Yoo Seol-Ok liked mystery novels and wanted to become a detective, but she gave up her dream after marrying. Now, she is a housewife with a husband who works as a prosecutor. She meets Ha Wan-Seung. He is a passionate detective and they decide to collaborate to solve cases.

Season 2 of Queen of Mystery premiered on February 28, 2018.

Yoo Seol Ok, a prosecutor’s wife, has always wanted to become a police officer for her entire life. She finally earns the opportunity after meeting Ha Wan Seung, a passionate detective who helps her dream come true. Instead of deal-ing with major cases that involve psychopaths or serial killers, Queen of Mystery 2 deals with crimes that can happen to anyone at any moment. It will also share an accurate information about crimes and ways to deal with them in real life.