YeonKyeong, a 33-year-old woman decides to give up on her music after failing multiple auditions. She has been pursuing her dream of becoming a singer from the day she performed in a radio competition but she can’t go on anymore. One day, YeonKyeong receives a letter and a guitar from Hyunsoo, her high school friend she used to make music with. Perplexed by his letter, she embarks on a journey to Wolmi Island to say goodbye to her old dream.
Mi-so and Ha-eun meet in elementary school and quickly become best friends. In high school, Ha-eun meets Jin-woo and starts to have feelings for him, but he starts to have feelings for Mi-so. When they all meet again as adults, they are very different people, but they try to remember what friendship is really about.
When family members feel more like strangers than a hired caretaker, what is an aging parent to do? Mal-im, age 85 and living alone, finds her independent lifestyle increasingly difficult to maintain. Her son, faced with his own financial and family burdens, is simply unavailable, and Mal-im's discomfort is only worsened by the quirky but sincere caretaker he sends. When the Seollal (Lunar New Year) holiday brings the family together, tensions finally explode out into the open.
Manager Oh, an employee at a noise pollution treatment center, takes his own life after suffering verbal abuse by local residents demanding a huge amount of compensation. Amid public criticism of regional self-centeredness, Taeseung joins the center as his successor. With his heart set on getting promotion, Taeseung immediately goes around asking for signatures. As the local residents cooperate in order to avoid further public criticism, the promotion seems to be just around the corner. However, when Youngsik and Donggyu get in the way, Taeseung suspects that they may have killed Manager Oh.
Skill, beauty, personality, ‘Diving Diva’ Lee-young has it all. Not being able to be with her best friend Su-jin is the only thing that gets in her way. Just so she can help Su-jin out, she changes her event to synchronizing swimming. While pouring everything to Olympics selection practice, Su-jin and Lee-young are involved in a freak accident. Su-jin disappears without a trace, while Lee-young survives but loses her memory. Lee-young’s memory slowly comes back to her but remembers strange side of Su-jin. Her iron will begins to shake on the diving board.
After a traumatic event, a drug trafficker turns sides and conspires with a dangerously ambitious undercover police officer to bring down the mysterious kingpin of a major drug cartel.
Six months ago the son of the married couple drowned. The couple, together with the teenager that their son saved, begin a journey to cope with the loss.
A sickly girl Ju-ran transfers to a new sanitorium boarding school to regain health. But she discovers that students are disappearing and notices abnormal changes happening to her body. She suspects the school for what's happening and tries to discover what secret is hidden.
A witness to a car accident is offered bribes by both parties.
Two spies share a secret bond, despite their loyalties. A North Korean assassin is sent to Seoul to kill a dissident, but instead he teams up with a South Korean agent in search for revenge.
In the spring of 1999, a group of old friends gather to celebrate their 20 year reunion. Among the group is Yeong-ho, a cold, unhappy man, whose demeanor puts a damper on the festivities. The seriousness of Yeong-ho's depression becomes apparent when he climbs a railroad bridge and looks like he might jump. At this crucial moment, memories of seven crucial episodes from Yeong-ho's past flood his mind.