Seven girls become good friends in high school, then events pull them apart for 25 years. When one of the friends lies dying in a hospital, she wishes to see each of them one last time.

Yoon-jung accidentally calls a stranger, instead of her boyfriend, and has phone sex with the unknown man. When Yoon-jung's relationship with her boyfriend turns sour, Yoon-jung meets Hyun-seung, the stranger she had phone sex with.

A class of students stays at school for a camp in an elite study group to finesse theirs and the school's grades. Upon the first night, the swimming coach is found murdered. As the students try to figure out what happens, a voice informs them that if they don't figure the murder out, students will begin dying in quick succession.

Se-jin was once a famous pro golfer. One day, Se-jin’s older co-worker died because his drunk driving. He loses his voice because of this car accident and goes to an island in order to take a rest. And this encounter starts to change Se-jin and people of this island.

Kanemoto served five years in prison for attacking Masao of the pro-North Korean organization, the killer of the president of the company who brought him up. Released from prison, Kanemoto gets injured fighting Masao again. Harumi, who lives with her brother Genichi, takes care of Kanemoto. When Genichi visits Korea and reveals the pro-North Korean organization's lies, he becomes their target. This also places the life of Harumi and their family at risk and only Kanemoto can save them.

A top actress lives next door to a teenage tennis player named So-eun who is, in fact, her daughter. Mother and daughter don't quite get along.

Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in the prison. While they try to take over the organization after the prison release, their ulterior motives starts to emerge.

Ji-won is pretty and easy-going. She encounters her first risk in life! She has a sister named Ji-min but something happens as she takes the load of her family with her sister. Their dead mother's medical bills are too much for them to handle... Ji-won puts her hands on the company funds and the section chief uses this against her to take sexual advantage of her. Ji-min finds out and hires a private investigator...

Yong-min was a playboy who was loved by every woman. He had a woman named Tae-yeon whom he loved. However she breaks up with him due to his playboy habits and there is a rough quarrel in the process which leaves Yong-min blind. He meets and marries a woman named Soo-ae but he's lost all sexual desires along with his sight so it's hard to maintain a good marriage with her. Then one day Ho-yeong and Soo-jeong move in next to them and Soo-ae feels a kind of adoration for Ho-yeong...

Seung-gi has been living under a strict father, blaming himself everytime when a natural but uncontrollable desire surges from inside of him. However, because he can't spurt that desire in reality, every night Seung-gi shares passionate love with a mystery woman in his dreams. He meets Eun-ji ("Viki") a senior from school and gets provoked by her as well as Soo-jeong who he's had a crush on forever.