Kitayama Chika is a salesperson of an apparel shop who recently married Satoru, a manga artist assistant. Despite their very different personalities, Chika and Satoru enjoy their lives a lot as newlyweds, but they slowly noticed many strange changes, such as the house getting messier day by day. One day, Chika was dismissed from her job and was wondering why she couldn't do things well. She decided to get tested and found out that she has a "developmental disorder" in which the symptoms are very similar to what she has been experiencing. After hearing the result, Chika and Satoru decide to take unexpected actions while being watched over by the people around them.

Based on a highly successful novel by Higashigawa Tokuya, selling over 1.4 million copies after its publication in September of 2009, the intriguing yet familiar mystery takes place inside a seemingly unsuitable place for mysteries: Socialite Reiko's stately mansion. Reiko is the only daughter to the CEO of a major enterprise, "Hosho Group," known worldwide. Hiding her true identity behind her day time job as a rookie police officer, Reiko comes home to her butler and driver, Kageyama whenever she is faced with a complex case, being a perfectionist, Kageyama is flawless when it comes to serving meals full course from hors d'oeuvre to dessert. He sharply points out the lack of reasoning on Reiko's side, keeping the comment one fine line away from being offensive. The cutting remarks by Kageyama and appearances by unique characters, as well as the play on words and light tempo of witty conversations... and most of all, being referred to as the "Armchair detective" who solves mysteries without encountering the suspects together create a daring mystery solving roller-coaster ride.

37-year-old Hasumi Rika is the customer centre supervisor at a medium-sized mail order company. Her father has passed away and because her younger sister married first, she lives in the family home with her mother. She has always thought to herself that it is her part to look after her mother Tomoko in her old age.

One day, Rika is invited by her yoga instructor Kiyota Etsuko to attend a marriage hunting party and finds herself paired with Sakamoto Eikichi, a man who does not even maintain his nostril hair. Meanwhile, Tomoko suddenly declares that she is remarrying. Worried about her mother, Rika accesses the marriage hunting website she has used. She is initially doubtful but arranges to meet a man who sent her an email. She gradually gets into the “marriage hunting market” and becomes involved in it. At first, she makes light of it, thinking that a person like herself will be able to find a good partner immediately. But she sees with her own eyes the marriage hunting situation of a female around 40 and is made to realise her own value on the “market”.

However, her competitive spirit and the encouragement of fellow marriage hunters makes her continue marriage hunting. As Rika does so, she learns what kind of person she is, what she truly wants and what really matters in life. Just as she is starting to look once again at the marriage and future that she wishes for …

After graduation, Ga Yeol Chan landed his first office job at a company. His superior there, Lee Man Sik, was a "kkondae" which refers to a rigid, old school type of person. He would force his old school ways of thinking onto Ga Yeol Chan, causing Yeol Chan to quit his job there and go work at a ramen company. He worked very hard and was promoted at lightning speed thanks to his radical planning and aggressive marketing.

Yeol Chan now works as the chief of the sales and marketing department at the ramen company. This position wields the most power in the company. One day, Ga Yeol Chan gets a senior age intern. That intern is Lee Man Sik who gave him such a hard time at his first job.

Based on the winning script from MBC’s 2018 drama writing contest.

Ae Jung was once the most popular member of girl band The National Treasure Girls. However 10 years ago the band broke up and she received most of the blame. Despite her warm personality her career has suffered ever since and she now spends her time fighting for air time on variety shows. Dokko Jin is a top movie star at the height of his career. The two meet and become involved in each other's careers. Yoon Pil Joo is a doctor of oriental medicine who has no interest in the entertainment industry but agrees to make a dating show. Dokko Jin helps get Ae Jung a role on a new reality show called Couple Making. Pil Joo is the bachelor being set up on Couple Making. Both men fall for Ae Jung both off and on the screen.

Cha Eun Ho is a successful and handsome writer who is also the youngest chief editor at a publishing company. He has a calm demeanor and remains reasonable at work. He then becomes involved in the life of his childhood friend, Kang Dan Yi who was once a popular copywriter. She is now divorced, a single mother, unemployed and struggling in life though still attempts to find a job, but even with her once good career, she cannot.

However, in a desperate attempt to find a job, she lies about her background and begins to work as a temporary worker in the same building under none other than Cha Eun Ho. As they become involved in each other’s life more than often, a love story begins to unfold.

The series is set in the early 90's in Moscow after the dissolution of the Soviet Union. With the opening up of Russia to capitalism, Moscow sees an influx of Chinese entrepeneurs looking for business opportunities. Unfortunately, along with the flourishing business landscape comes a Chinese criminal element that preys on Chinese business people with the assumption that the Russian police would not interfere and that crimes committed outside China are beyond the jurisdiction of the Chinese government to prosecute. However, matters come to a head when an Old West style train robbery takes place on the Beijing-Ulan Bator-Moscow Express. A team of five Chinese police officers arrives in Moscow with the intention of investigating the crimes and bringing the culprits to justice. The show stands as a fascinating contrast to typical Western/American fare that relies on action, sex, violence, gore, guns and slick production values. This Chinese Russian production stands out as it manages to tell its story with humor and compassion while showing its cop protagonists depending on their wits to achieve results instead of just plain brute force or technological wizardry. Their dilemma is compounded by the fact that they are operating in Russia unofficially with no electronic equipment, weapons, badges or actual authority.

Episodes: 31

Ruby (Seohyun) is a genius who’s decided to focus her skills on jewelry design and who has an eye for quality jewels. She has a social anxiety disorder, but the discovery of a magic ring will aid her in becoming a successful jewelry designer. Due to her phobia, she doesn’t like going to unfamiliar places and prefers to stay at home. Ruby has one and only friend (Lee Chul Woo) who is a handsome and warmhearted guy. He regrets that his genius friend can’t demonstrate her abilities because of her social anxiety, and he’ll work hard to help her achieve her dreams. Meanwhile, Lee Yi Kyung is a CEO of a jewelry enterprise and Ruby’s secret crush of a year. He’ll battle for Ruby’s affections with Lee Chul woo in a love triangle.