Someone who loves someone, and does everything for that person, but that person does the same for another person.

In the Ningyo-cho area of Nihonbashi, Tokyo - a woman was murdered. Detective Kaga Kyoichiro, who just transferred to the Nihonbashi police precinct, is placed in charge of the murder case. With virtually the entire residents of Ningyo-cho's shopping street emerging as suspects, Detective Kaga must use his keen sense of deductive reasoning to uncover the truth.

In the mid-to-late 1980s, Xiao Zhan, Cong Xiaoqing, and other domestic college elites from different backgrounds and personalities embarked on a journey of pursuing the American dream. They were the pride of the sky in China, but they turned into phoenixes when they arrived in the United States. Obstructed academic studies, emotional frustration, financial crisis, interpersonal crisis, they face difficulties and ups and downs and finally succeed in their careers. Later, he resolutely chose to return to the homeland of the motherland, work together to start a business, and move forward. From China to the United States, and from the United States to China, for more than 30 years of hardening, the group finally presented a magnificent hymn from the "sea side" to the world in various fields such as scientific research and finance.

Kurosaki is a young man whose family was destroyed by swindlers. He gows up and become a swindler himself, known as Kurosagi. He swindles other con artists and returns the money to the original victim. He works with the master swindler Katsuragi Toshio even though Toshio had a hand in the destruction of Kurosaki's family.

He's life begins to change when he meets Yoshikawa Tsurara, a young law student who disapproves of his disrespect of the law.

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Sayama Michio is a young and callous beautician who will stop at nothing to fulfill his ambition(s). Coming from an impoverished background, he suddenly becomes the darling of the beauty world. He holds women who desire beauty captive and puts on several different faces when dealing with Murase Minako, the female owner of the place that he works at; Hatano Masako, a woman of leisure; and Fukuchi Fujiko, an editor of a weekly magazine to come out tops. He also gets involved with two detectives who are investigating him for a prior incident.

Bei Li Li is a troublemaker who doesn't mean to cause trouble but she makes a mistake at work that costs four of her colleagues their jobs. Her manager Qiao Yi Qiao helps them out and steps up to open a new company. They rent a dingy four-story building where they meet the physically agile yet simple minded Yang Wei. A meshing of six peculiar personalities in the workplace bring about a throng of funny engagements as they work together to establish their careers.