What happened in Korean society in the 1990s? The film starts with the Jijon-pa (Supreme Gangsters) case. The shocking story is narrated through the discussion by the two detectives who arrested the gangsters, of details of the roundup, data screens, and the death sentence. Nevertheless, Nonfiction Diary’s focus is not on the crime story. Starting from Jijon-pa onwards, the film reflects on the 1990s, when Korea digressed into contemporary history. The Seongsu Bridge and the Sampoong Department Store’s collapses are recalled, followed by the then-government’s punishment of the May 18 Uprising leaders, revealing the Korean legal system’s death penalty status, touching on political and power issues. The audience is reminded that today, 2013, is an extension of that same flow.

After six failed relationships Eun Jin is determined to succeed with her clumsy unromantic boyfriend, but questions arise when she suspects that he is hiding something.

When Young-min and Mi-young marry each other after they graduate college, they experience different challenges that test their relationship.

Sung-geun is an untalented actor who makes a living playing minor roles. He happens to land on the role as Kim Il-sung, the former leader of North Korea, for the rehearsal of the South-North Korea Summit. Sung-geun becomes passionately immersed in his role, motivated by his son who looks up to him. However, the summit is not realized, and Sung-geun ends up lost in the delusion that he really is Kim Il-sung.

A couple of teenagers have a son who suffers from progeria, a rare genetic disorder which makes one age exponentially faster than normal. 16 years later, the child has the body of an 80 year old in the final days of his life writing a book about his parents' love story.

An unappreciated old granny magically turns 20 years old again and decides to make the most of her newfound youth.

Ji-wook is a virile detective with a reputation, but deep down in his heart, he always considered himself as a woman and finally decides to get a transsexual operation. However, his plan falls apart as vicious gang members start their revenge on him.

Tae-Il lives a fast life as low level thug. He then learns that he has a terminal illness and not much time left to live. Then, for the first time in his life, he falls in love.

Chinese eel farmer Chen smuggles himself into Korea to prove that his eels are safe to eat.

In 1862, amidst the rule of the late Joseon dynasty in Korea, a band of fighters named Kundo rise against the unjust authorities.

A high school teacher whose wife is about to give birth finds himself tangled in temptation and obsession when a student falls for him.

A wealthy couple seeks to secretly adopt the unborn child of an impoverished and troubled rural teenager, in this slow-burning and ultimately shocking drama from writer-director Albert Shin.

Ji-so, a young girl who doesn't have a house because of her bankrupted dad. In order to get money to buy a house she plan to steals wealthy people's dogs to earn reward money when she returns them.

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.

After being involved in a traumatic incident, 17-year-old Gong-ju is forced to change schools. Uncared for by her parents, her previous teacher arranges for her to hide away at his mother's place. It takes time for her past to catch up with her, but when it does the revelation is devastating.

A Beijing professor returns to his stomping grounds for a friend's funeral. Reflecting on the past, he meets a tea shop owner who sparks feelings of love in a time of pain.

A former professional baseball player becomes entangled in loan-sharking and mob connections after a fixing scandal ejects him from his sport. When his girlfriend vanishes he is forced to confront his mentor and enter a deadly battle.

A teenaged boy transforms from a ‘fashion terrorist' to a 'fashion king' in order to win the heart of the prettiest girl in school. The story is about high school boy Ki-myung, who has a crush on the prettiest girl in his class and opens his eyes to fashion in order to become the best dressed person in the world.

Upon the retirement of the father, who has been a teacher at Cheorwon Technical High School, mother, two sons and daughters-in-law gather in Cheorwon. The retirement ceremony is rather quiet, and father drops the bombshell at a Chinese restaurant while eating. When he announces he will get a divorce, mother is so angry she doesn’t know what to say, and the sons and daughters-in-law are confused. Heavy snow hits Cheorwon keeping the buses from operating, and the family start an awkward time at the father’s residence.

Hyun-tae, In-chul and Min-soo have been best friends since childhood. Their relationship is forever changed after Hyun-tae's mother asks In-chul to commit insurance fraud by destroying her arcade.

In response to a sudden dismissal of staff, workers at a big retail store begin a protest against their employer's oppressive labor policies.

Following the brutal rape and murder of his 16-year-old daughter, Sang-hyeon stumbles into an ever-widening conspiracy of rage, revenge, and murder.

One winter day, nobody comes to see a play. One of the drama’s actresses becomes angry and leaves the theater. She goes to a park, drinks and meets people.

After trying to cover up a car accident that left a man dead, a crooked homicide detective is stalked by a mysterious man claiming to have witnessed the event.