Hyun Ji-seok, a university professor, and Go Mi-yeon, a scriptwriter, were high school sweethearts, who discover that they are cousins. They break up, but find themselves attracted to one other once again when they meet in Seoul four years later.

Yoo Ji-Na has been a popular singer for the past 20 years, but she holds pain inside because of something she abandoned when she was younger. Meanwhile, Jung Hae-Dang began working as a Yoo Ji-Na impersonator to support her family after her father lost his job. She sings on stage at a club and tries hard to mimic Yoo Ji-Na's songs.

Three middle age-women are friends who graduated from the same high school and believe they are leading happy lives, until they face a crisis.

After an accident shatters her storybook life, a comatose woman gets a second chance at life when a reaper from above intervenes, at a cost.

History tells of memories, the longings for love and healing.

Desperate times call for desperate measures and for one mom, that means bagging a rich man to make her kids happy. Pil Jeong is a single, divorced mom of two who swore that she’ll never get married again. Her children, on the other hand, have other plans in store. They beg her to find and marry a rich man as a means of securing their family’s future and a hilarious family expansion project ensues.

As the chairman of GD Motors, Han Gi-Ju is a divorced man working in Paris. He takes Gang Tae-Young, who is working as a housekeeper at his home, as his date to a business party. She is a poor international student who is chasing her father's dream of studying in Paris. Han Gi-ju's nephew, Yu Soo-Hyeok meets Tae-Young by chance, and falls for her. Tae-Young ends up returning to Seoul, soon after, Gi-Ju and Soo-Hyeok also return to Seoul separately. Tae-Young asks Gi-Ju for a job and in time, the two fall in love. Gi-Ju's father tries to force his son to marry Moon Yun-A (Oh Joo-Eun) the daughter of an influential politician and she exhausts every means to make this happen. As the family secret involving Gi-Ju's and Soo-Hyeok is disclosed, the relationship between Tae-Young and Gi-Ju is in crisis.

Cha Do-hyun is a rich heir to a family company with one major problem. Due to suppressed childhood trauma, he suffers from dissociative identity disorder manifested in 7 unique personalities who are out of his control. In order to overcome this disorder in secret, he hires a first year medical resident to help him heal by killing off each personality one by one.