Su-jin, who works as a karaoke helper at an entertainment district in Seoul and a press office salon, asks Ji-yeon, a college student who lives with her, to work for her for one day when her father suddenly asks her to meet her. Su-jin meets Ji-yeon's boyfriend, Seung-yeong, in liberal arts class at her school, where Ji-yeon took her place, and falls for her.
A teenage girl is captured by a giant mutated squid-like creature that appears from Seoul's Han River after toxic waste was dumped in it, prompting her family into a frantic search for her.
When a crime organization from North Korea crosses borders and enters South Korean soil, a South Korean detective must cooperate with a North Korean detective to investigate their whereabouts.
Teacher Waryong retires after 37 years of teaching. He sets out to visit his former students living in Seoul. While those who establish themselves successfully show only indifference to him, those who are poor but honest heartily welcome him. Teacher Waryong helps the less fortunate former students.
seg.1) Jong-soo misses his roomate Yeong-joo, who is gone. He's embarassed he misses someone who wasn't even his lover, but a close roomate. Meanwhile, Yeong-joo knew this day would come. seg.2) Min-ha is full of vitality. Ki-cheol lives in the greenhouse built by her. They've lived together for almost three years. One day Ji-hye bumps in between them. seg.3) Lovers Yoon and Cheol decide to spend a day up in the mountains. However, Yoon suddenly pours her heart out on all the things she was upset about at Cheol. seg.4) Sang-won is working at an electronics department and having a secret relationship with an elderly woman who is from the store across. As spring approaches Sang-won starts to feel weak. seg.5) One warm afternoon, Min-jae the chef was taking a nap and Ji-hong woke him up. seg.6) Byeong-goo, a former boxer has been caught in a punch-drunk. Byeong-Gu realizes he doesn't have much time life and starts boxing again.
Activist Kim Min-soo is a fugitive from the law as a result of his political campaigns. As he goes into hiding, he meets and falls in love with Lee Sun-young, a music graduate with plans to study abroad. But not long after, they begin to face obstacles. Because of Min-soo's fugitive status, Sun-young has to cancel her plans to study abroad in order to protect Min-soo. Eventually, the couple elope and Sun-young becomes pregnant, but eventually, the police finds Min-soo and arrests him.
A working class family move into a new condo purchased after 11 years of hard work. They throw a housewarming party to show his co-workers when overnight a heavy downpour creates an extremely deep sinkhole that engulfs the entire building.
A comic book store in Garibong-dong is run by a beautiful woman better known as Madam. This store stays open late into the night, thus attracting varied types of people such as gangsters and hustlers.
Citizens from upscale Gangnam in Seoul start experiencing unusual and terrifying symptoms, devolving into inhuman creatures, leaving only a few survivors with the possibility to make it out alive.
A bank employee dissatisfied with the casualness and secrecy of her relationship with her boyfriend, a superior at work, is suddenly given a few days of vacation.
Kwon, a language school instructor, stops by her old workplace and receives a thick envelope addressed to her. A Japanese instructor named Mori had proposed to her two years ago. She turned him down. Mori had immediately gone back to Japan, but now was back in Korea looking for her. The envelope enclosed letters he had written to her during his search through Seoul. After Kwon finishes the first letter in the lobby, she grows faint coming down the staircase and drops the letters. She gathers them off the floor and sees there are no dates on the letters. She now has no way of knowing the order in which they were written.
A newspaper reporter becomes a witness to a murder and finds himself relentlessly pursued by the killer.
An oriental doctor Kim Hak-gyu is a cantankerous man who is the longest-term householder in a small village in Seoul. He often causes domestic trouble by being nasty to his wife and his children. Kim Hyeon-ok, a daughter of a young widow who runs Nahana Beauty Shop, is in love with Choi Du-yeol, an obstetrician across the street. Kim Hak-gyu has great distaste for western medicine, and at the same time, is jealous of the obstetrician. He always gets in the way of Choi Du-yeol. Kim's son, Hyeon-gu, dates Jeom-ryae, a daughter of a bar owner.
For the first time in Korean history, the mayor of Seoul attempts a third term in office, with his entire campaign team ready to soil their hands.
Hee-soo is desperate for money and finds her ex-boyfriend who owes her money. He goes around to various ex-girlfriends to get cash and she trails along to make sure he does not cheat her.
Senior year of high school takes center stage as Lara Jean returns from a family trip to Korea and considers her college plans — with and without Peter.
Mr. Kim is jobless, lost in debt and has been dumped by his girlfriend. He decides to end it all by jumping into the Han River - only to find himself washed up on a small, mid-river island. He soon abandons thoughts of suicide or rescue and begins a new life as a castaway. His antics catch the attention of a young woman whose apartment overlooks the river. Her discovery changes both their lives.
A model student transfers to the notorious Jungmoon High School known for its severe corporal punishment by teachers and power struggles between school gangs.
A Korean man in China takes an assassination job in South Korea to make money and find his missing wife. But when the job is botched, he is forced to go on the run from the police and the gangsters who paid him.
After a chance meeting, a man and a woman stroll through Seoul’s changing streets.