His childhood first love, Choi Jun, who disappeared without a word, returned as a hot general manager! An office rom-com about idol-turned-intern Lee Jun and Choi Jun, a heart-fluttering genius director.

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.

Tachibana Miyabi is 39-years-old and hasn't had a boyfriend in 5 years. This doesn't bother her though as she is pretty and confident and enjoys her life as a single woman. She is a doctor and runs her own successful dermatology clinic. But at her school reunion, she finds herself being pitied by others for still being single. Afterwards, she attends a gourmet meeting at a restaurant. There, she talks about her school reunion. Seiji, the owner of the restaurant, makes a biting remark that she isn't the type popular with men. She becomes upset by the remark, but finds herself taking his advice to heart. Eventually, she asks Seiji to mentor her on how to catch men to which Seiji agrees. What follows is a series of mishaps and triumphs and adventures as Miyabi does her best to be the 'type' of woman men want.

Old apartment complexes, rented houses in the suburbs, and cabs running through the cities. These scenes may look ordinary but each has a different story to tell. A daughter who works part-time to support her disabled mother; a woman who has been cut off from her family and continues to work as a cab driver; a granddaughter who lives in a rented house and works at a factory with her grandmother. This is the story of three women, who live far apart from each other and do not know each other's existence until a fateful encounter through a radio program.

The story of the investigative team Number 5 specially organized to actively combat crime through stake outs, wiretapping, communications monitoring, and deep-cover infiltration. A secret police unit that bends the limits of the law in order to fight crime, the new department comes in addition to the existing departments for criminal investigations, special investigations, criminal affairs, and white collar crime.

The members are Cha Gun-Woo, Jang Moo-Won, Jang Min-Joo and Choi Tae-Pyeong. They will hunt down criminals and investigate crimes while undercover (hence the title).

Ueno works at Gotanda Kingdom, a love hotel in Gotanda, Tokyo. It is an environment where it is easy for human nature to be laid bare and he usually hides and is discrete for customers’ sake. However, Ueno objectively sees the true feelings of men and women who have difficulty understanding each other and appeals to them by offering sound advice. He rather sadistically teaches them tricks to be popular regardless of gender through the experiences he has analyzed.

45-year-old Kasumi has been divorced and now lives with her high school son working at a laundry. She once pledged a reunion with a boy in her early years. One day, she encounters first-class designer Yuri. They soon get attracted to each other but later she notices that he might be the one whom she promised to meet. -- NHK