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.
It has been two years since Sagenya Machi (Kitagawa Keiko) and Yashiro Hajime (Nakamura Toru) left Teiko Real Estate’s Shinjuku office. Sales at the office, which is now led by Fuse Makoto (Kajihara Zen), have been sluggish because of the rise of a rival and the office is on the verge of closing down. Niwano Seiji (Kudo Asuka) visits Machi who has become the company president of Sanchi Real Estate to seek her help.
10 men and women are called to Natural Island Hotel on the isolated island Heitaijima off Yachijojima by the owner Nanao Shin. They take the dinner that has been prepared while filled with a mix of expectation and anxiety about what is going to happen and why they have been invited to this island. Then they suddenly start to hear a mysterious voice reveal their past crimes. As the 10 of them go through past incidents in their mind, one of the invited guests is murdered before their eyes. That seems to be the catalyst for the murder of another guest and then yet another. Several days after the invited guests came to Heitaijima, police head over to the island following the report of murders. They discover 10 murdered bodies on this big “locked room”. Who is the murderer and why did these 10 people have to be gathered and killed? ~ Based on the novel "And Then There Were None" by Agatha Christie, published in 1943.
Eiko Yagami (Ryoko Yonekura) is a detective at the Ueno Central Police Station's Organized Crime Division. She often loans money to her co-workers without charging interest in return for information. She uses that information to solve a case.
One day, Kasumi (Riho Takada), who is the daughter of Senba yakuza leader (Toshiyuki Nishida), is killed. Eiko Yagami takes the case.
Riko Shirono (Mikako Tabe) doesn't have any big expectations for a man in her life, but she works as a love simulation game planner. She receives a request for a new love game from app company TIMEIS. Soichiro Kurokawa (Issei Takahashi) is the CEO for the company. He is almost perfect, but he can't understand woman’s mind.
One day, Soichiro Kurokawa (Issei Takahashi), who likes his subordinate Momose, asks Riko to teach him about love techniques. Due to Riko Shirono’s help, Soichiro and Momose get close, but Riko finds herself becoming attracted to Soichiro Kurokawa.
Kazuya Takajo (Sho Sakurai) was a promising soccer player. At the age of 23, he was selected for the national A football team and he bought a house to live with his fiancé Miki Nakagawa (Masami Nagasawa). One day, Kazuya Takajo gets into a car accident and becomes paralyzed. He must now spend the rest of his life in a wheelchair. He falls into deep despair. At that time, Miki shows him their marriage certificate.
Kazuya goes through rehab on the strength of his wife's love. Yet, he becomes frustrated by those opposed to his marriage with Miki and others who give him pity looks. He also can't find anything to replace soccer in his life. Kazuya then witnesses a wheelchair basketball game at a gym.
This time our protaganist Inogashira Goro (Matsushige Yutaka) working at the start of the New Year. It starts with a strange dream while taking a short nap inside his car. The dream reminded him how hungry he feels so he goes in search of an eatery. He tries to revisit two of the shops where he went before but for reasons, he cannot eat there. In vain, he goes about his business in Nakano, Nakano Ward but in the end, his hunger gets the best of him. He decides to settle for any good shop he can find within the area. Good thing he found a nearby shop called "Saisai Shokudou" which serves delicious Shanghai home cooked meals. Unfamiliar with the cuisine, he asks proprietress (Miyazaki Yoshiko) to help him choose the dishes... Later in the day, he goes to Tsudanuma, Chiba Prefecture where persistent client Sugihara (Kitamura Soichiro) asks him to stay at an office to continue working on a proposal. Goro is annoyed but begrudgingly complies, and gets to work. Before he knows it, it is already late in the night. Feeling hungry once again, he goes off to find some place to eat. He discovers a steakhouse called "Texas". Goro cannot help but leave his work behind, and partake of scrumptious late night steak dinner. Restaurant manager (Wada Masato) teaches him how to eat their steak, "Texas"-style...
Botchan (Kazunari Ninomiya) has sense of strong justice and does not lie. He is offered a teaching job at a middle in a small village far away from his hometown of Tokyo. Botchan accepts the position and begins to work as a math teacher. The assistant principle there wields absolute power. Botchan has a hard time dealing with his fellow teachers and the students.
Tomomitsu Tsuchiya (Taisuke Fujigaya) is the captain of his high school basketball team. He is also a senior at his school. Even though he is not that good in basketball, he is selected as bench player for the prefecture qualifying round. The underclassmen on his team, who are all better than him, are not happy about his selection.
Tomomitsu Tsuchiya then meets Sae Hatori (Mizuki Yamamoto). She is also a senior at the same high school. She keeps watching Tomomitsu Tsuchiya shoot three pointers. They become closer and develop a romantic relationship. Suddenly, Sae transfers to another school without saying a word.