Prince Sung Won sees Hwa Yeon, the daughter of a wealthy nobleman, for the first time and falls in love, but Hwa Yeon loves Kwon Yoo. Kwon Yoo saved her father's life and now lives with her family. Meanwhile, Prince Sung Won's mother notices her son's infatuation with Hwa Yeon, but she doesn't think Hwa Yeon is good enough for her son. Prince Sung Won's mother then schemes to have Hwa Yeon become the concubine to her stepson the King.
Set towards the end of the Joseon Dynasty period, Madam Jo lives as a devoted wife, but secretly she resents the restrictions placed upon her by society. Madam Jo has held many discrete relationships with other men. Jo Won is an accomplished scholar and skilled in martial arts. His real passion though is seducing other women. Madam Jo is his first love. Since that time they have engaged in high stake games of seduction and love. They both hide their true feelings for each other. Madam Jo then sets Jo Won upon the innocent So Ok, who will become her husband's concubine.
In 1969, Colonel Kim Jin Pyeong has returned to South Korea after fighting with valor in the Vietnam War. He is trusted by the Army Commander who is also his father-in-law and respected by nearly everyone on the military base. Nevertheless, Colonel Jin Pyeong suffers internally from his experiences in the war. One day, Kyung Woo Jin is transferred to work for Jin Pyeong. Woo Jin is the type that will say or do anything to please his boss. Soon, Colonel Jin Pyeong meets Jong Ga Heun, the wife of his new subordinate. The couple also moved into the house across the street from Colonel Jin Pyeong and his wife. On a fateful evening, Colonel Jin Pyeong teases a caged bird on the porch of his neighbor's home. A stifling obsession soon begins between Colonel Jin Pyeong and the wife of his subordinate.
Sakura is a single 39-year-old woman. She works at a beauty salon as its vice manager. Sakura makes customers pretty, but she isn't interested in making herself pretty. She envies falling in love, but at the same time is afraid of falling in love. One day, at a party, Sakura meets Hiroto, who is much younger than Sakura. Hiroto is a bike rider and is attracted to Sakura. Meanwhile, Rintaro is a manager at the beauty salon where Sakura works. Rintaro likes making biting remarks, drinking alcohol and using his scissors.
Narita Misao is a rookie employee at a company. She doesn’t like Ichikawa Kazuya, who works in the same department. He is brutally honest when he talks to other people. Nevertheless, an incident leads to Narita Misao developing feelings for him. Ichikawa Kazuya also becomes attracted to her. The couple soon enter into an intimate relationship, but Narita Misao learns afterwards that Ichikawa Kazuya is engaged to his girlfriend. Narita Misao is confused by the situation and wonders what he is thinking.
The story happens in the near future of Japan, where sexual activity is forbidden by law. Inuda Hikaru is an honor student whose father is an executive at Setori (Sexual Misconduct Control Bureau of the Ministry of Health, Labor and Welfare). Hikaru aspires to become like his father and finds sex unpleasant. Minase Yu is Hikaru's childhood friend who has a sharp tongue but excels in her grades. Yu is also a big fan of nationally known actress Uchu Misora, commonly known as Uchura. One day, Hikaru is invited by a classmate to a shady members-only club where he witnesses men and women engaging in illegal sexual acts. He is also surprised to see Uchura, who claims to be "pure" there with a man. Before he realised, Hikaru finds himself being caught in an "underworld organization" where sexual activity is performed.
Narita Misao is a rookie employee at a company. She doesn’t like Ichikawa Kazuya, who works in the same department. He is brutally honest when he talks to other people. Nevertheless, an incident leads to Narita Misao developing feelings for him. Ichikawa Kazuya also becomes attracted to her. The couple soon enter into an intimate relationship, but Narita Misao learns afterwards that Ichikawa Kazuya is engaged to his girlfriend. Narita Misao is confused by the situation and wonders what he is thinking.
Takamori Azu discovers that her husband, whom she trusts more than anyone else, is having an affair. Her peaceful everyday life suddenly transforms into days of endless worry. After an internal struggle, she decides to trust in him again. Her husband also rediscovers his love for her and the two of them are about to get back together again. However, each time they try to do that, they would be faced with all sorts of difficulties caused by her husband’s mistress.
Min Ki is an unemployed banker. He now takes over the domestic roles of the house: cooking, cleaning, and watching the baby. In his free time, he watches soap operas and reads romance novels. Meanwhile, his wife Bo Ra works at an English language institute and is having an affair with a former lover. One day, Min Ki accidentally stumbles upon a key, that belongs to his wife, and is unfamiliar.
Due to an accident, Sakura Hiraga gave up on her dream. She is now married and her husband runs a hair salon. They live in a luxurious penthouse apartment. Her life seems glamorous and she is envied by everyone. What everyone does not know is that Sakura Hiraga is abused physically and verbally by her husband. She is unable to leave her situation. Sakura Hiraga considers herself a goldfish in a fishbowl. One day, due to a goldfish, she meets a man.
Watanabe Mitsu is happily married to her second love, Ryota who was a patient at the eye clinic where she works. He is a nice man who puts her first and even cares about her mother, even though he is completely different from the popular guys she had dated in the past. He is a good catch as a husband and she could not have asked for anything more. But her first love is Arishima Koki from junior high school days. The one who moved out one day without telling her. After that, Mitsu had dated men who look like Arishima and even now, her eyes still follow men who resemble him. Then one day on the way back from a drinking session, Mitsu happens to meet again Arishima, whom she believes to be the man of her destiny, and they begin an affair.
Ai Ni has been a beautiful lady in Shanghai. When time passes, she is getting old, and her properties are only her husband, children and a dilapidated house. Hwa’s salon becomes a shell for her. Hwa has been Ai Ni’s stylist for ten years, and an intimate relationship is developed between them. Hwa’s salon is going to close down, and that makes Ai Ni feel worried. The closing of the salon shall represent an end of their relationship, but desire among them is releasing and growing. Just like a final answer to their relationship, they have the first but also the last sex in the vacant salon
