A woman struggles to find a job, but she keeps failing. She decides to jump into the Han River to die. The woman is rescued and is sent to the hospital emergency room. There, she hears that she might have a fatal disease and she might not have much time left to live. She barely manages to land a job as a contract worker.
Remi Takasugi (Ayame Gouriki) works for "Rental Lovers" which offers women for dates. She is the most popular woman at the company. Remi Takasugi carries out requests from her customers, but she does not provide sexual service. She figures out her customer's tastes and becomes the ideal date for her them. When she finishes her work, she never smiles and she wears bandage around her neck.
Successful career woman Takanashi Asuka has an old-fashioned dream of getting married and becoming a housewife. After her long-term boyfriend breaks up with her to pursue his own career goals, she encounters Nanami Ryu, a popular newscaster at PTV. Asuka and Ryu get along well, but the last thing he wants is to ever get married. This level-headed pair who want the opposite things in life should never get involved, except Nanami thinks people will lose their freedom once they get married. Moreover, marriage is just an escape place for a woman. "I absolutely don't want to get married," he said. For Asuka, Nanami is an ideal partner, except for his value concerning marriage. And the 'Battle of Value' begins.
Maki Maki (Takako Matsu), Suzume Sebuki (Hikari Mitsushima), Yutaka Iemori (Issei Takahashi) and Tsukasa Beppu (Ryuhei Matsuda) happen to all meet. They form a quartet and begin to live together in Karuizawa during the winter. There is a big hidden secret.
Maki Maki plays the lead violin in the quartet. She has family and only goes to Karuizawa on the weekends for performances. She has a negative personality and barely gives her opinions.
Suzume Sebuki plays the cello in the quartet. She is unemployed. Yutaka Iemori plays the viola in the quartet.
Tsukasa Beppu plays the second violin in the quartet. He comes from a musical family and also works at a donut company. He is the leader of the quartet and provides his grandfather's villa as a base for the quartet. Tsukasa Beppu has secrets.
Kang Han-Kyeol (Lee Hyun-Woo) is a great composer and gets inspired by the voice of others. He hides his identity from other people. Kang Han-Kyeol meets Yoon So-Rim. She is a female high school student with a great voice and she falls in love with him.
Kenichi Endo, Ren Osugi, Tomorowo Taguchi, Susumu Terajima, Yutaka Matsushige and Ken Mitsuishi all receive offers to take part in a big budget drama series with a famous lead actor and world famous director. To study their roles and relationships, the director asks the six supporting actors to live together for 3 months at a share house. The actors begin their temporary living arrangement. An incident from 10 years ago though causes the actors to hold resentment.
In this era where it's said that 1 in 3 couples get divorced every 2 minutes and 19 seconds, most of them negotiate their divorce matters together but the remaining get third parties to facilitate the process. However, about 2.4% of the couples who have to resort to a trial if the mediation process does not proceed as planned. The title of the drama comes from the fable "Kitakaze to Taiyo" which describes the leads who are lawyers with exactly opposite characters helping couples face off in court.
When Surgeon Kazuaki Okita (Takuya Kimura) was a rookie doctor, he was kicked out of the hospital due to his friend’s Masao Danjo (Tadanobu Asano) plan. He left for the U.S., leaving behind his girlfriend Mifuyu (Yuko Takeuchi). With his hard work, he became an excellent surgeon.
10 years later, he comes back to Japan by request of Mifuyu’s father, who is a hospital director. Mifuyu is now married to Masao Danjo.