A nostalgic trip back to the late 1980s through the lives of five families and their five teenage kids living in a small neighborhood in Seoul. Times may have been a little simpler, less technological, but still just as challenging to get through a typical day of life in the late 1980s. Five childhood friends, who all live in the same Ssangmundong neighborhood of Seoul, lean on each other to survive their challenging teen years and set a path for their futures. Sung Deok Sun (Lee Hye Ri) struggles for attention as the middle child in her poor family while also carrying the burden of her 999th ranking in school. Kim Jung Hwan (Ryu Jun Yeol) only has a one-track mind for soccer, even after his family becomes rich overnight. Sung Sun Woo (Ko Gyung Pyo) is the perfect student, student council president and a caring and dependable son in his family. Ryu Dong Ryong (Lee Dong Hwi) is a geek who knows more about girls and life than the rest of his friends, but his poor academic score prevents him from being able to go to college. Choi Taek (Park Bo Gum) is a genius baduk player who dropped out of school to go professional. As the group of friends get into and out of mischief around the neighborhood, what experiences from these memorable times together will they carry with them into their future lives?

Nam Se Hee and Yoon Ji Ho are in their 30's. This Korean drama shows sexism, chauvinism and stereotypes. Also, it shows how society influences one's personal decisions. Se Hee is a single man who doesn't want to get married. He doesn't care about dates and women. He just loves his cat, Kitty. He's very intelligent, logical and rational. However, there will be some times that he loses his temper. Ji Ho is a single woman. She's a writing assistant of dramas. She's a strong and determined woman. Unfortunately, she has to leave her house and seeks other place to live. Her friends help her to find a roommate. That roommate is Se Hee.

Overweight, kind-hearted Sa Geum-ran (Ha Jae-sook) married into a well-to-do family, but her husband Lee Kang-joon (Jung Gyu-woon) has spent the past seven years in the United States for his business, and she lives with his mother and sisters who treat her badly. Geum-ran learns that Kang-joon has been having an affair with sophisticated broadcast announcer Gyo Chae-yeon (Wang Ji-hye), and he asks for a divorce. When she sees her in-laws welcoming Chae-yeon with open arms, the distraught Geum-ran threatens her husband, who follows her and causes her to drive her car off a cliff. Everyone assumes that Geum-ran committed suicide and attends her funeral, not knowing that she's still alive. To get revenge against those who've wronged and betrayed her, Geum-ran begs Han Tae-hee (Joo Sang-wook), whom she thought was the plastic surgeon of extreme-makeover television show Change, to transform her, and he reluctantly agrees because of his own ulterior motives. After weight loss and surgery, Geum-ran emerges from the full-body makeover as a stunningly beautiful woman, and she begins calling herself the new name Sara (Han Ye-seul), albeit retaining her coarse ajumma personality. With Tae-hee as her life coach, they scheme to ruin Kang-joon and Chae-yeon's upcoming wedding in three weeks. But as Sara interacts with Kang-joon in their staged run-ins, old feelings resurface, and she decides that instead of destroying him, she wants her husband back. They adjust their plan accordingly, though Tae-hee soon finds himself falling for Sara.

Eun Hwan-Ki is the CEO of a public relation company but he's extremely shy. Due to his personality, his employees don't know him well. Chae Ro-Woon begins work at Hwan-Ki's company. She's energetic and recieves recognition for her work, but her only interest is the CEO. She plans to reveal who Eun Hwan-Ki really is.

Eun Bong Hee is a prosecutor trainee who unfortunately becomes a murder suspect. Noh Ji Wook who is a prosecutor tries to help Eun Bong Hee but loses his job in the process. After the prosecution, Eun Bong Hee who is free from the crime falls in love with Noh Ji Wook. But Noh does not accept her love towards him but offers to help her in finding the real suspect. In the mean time the real murderer plots a plan to avoid being caught.

Kim Min Gyu has wealth and success, but lives an isolated life due to his allergy of people. He then meets and falls in love with a girl who is pretending to be a robot for her ex-boyfriend, a genius robots professor.

Choi Ban Do and Ma Jin Joo are both 38-years-old and a married couple. Choi Ban Do has been burdened with being the breadwinner and Ma Jin Joo is a housewife with low self-esteem. Even though they loved each other when they married, they now hate each other. They both regret marrying at such a young age. The couple travel through time and find themselves as 20-year-old university students, when they met for the first time.

An heir used to shopping away his grief finds himself trapped in Seoul with no memory and no one to help him except a sweet, rural girl who teaches him the value of a life without money.

Fictional webtoon entitled W is written by its legendary author Oh Seong-moo which begins to function on its own, like a different world existing there. The story-line of the webtoon starts when a handsome and intelligent boy Kang Chul becomes famous as he won a shooting competition. But this fame is interrupted when the unknown Murderer massacres his family, and he is erroneously accused of the crime. Yeon-joo is the daughter of the author of the famous W. She goes to her father's studio to investigate his sudden disappearance. There, she is pulled into W's alternate universe and meets its protagonist Kang Chul with whom she eventually falls in love.

Kim Sa Bu once gained fame as a top surgeon at a huge hospital. One day, he left the industry, and now he is a chief surgeon at Doldam Hospital in the countryside. After he conducted a successful operation on Chairman Shin, he gets to improve the hospital under reliable support. But then Chairman Shin passes away. New people appear and his students had to leave the hospital. Furthermore, his wrist, which was injured three years ago, starts to act weird. After all, he goes to a huge hospital himself to solve the manpower shortage at Doldam Hospital, where he finds two people who resemble his former students but who seem much more lacking. Seo Woo Jin would do anything for money, and Cha Eun Jae runs out every time she goes into a surgery room. Will Kim Sa Bu be able to run Doldam Hospital with these two?

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