Geum Bok is ashamed of her mother who works as a street cleaner. Her mother, as a single mother, has worked hard to support Geum Bok. Geum Bok's feelings for for her mother begin to change. On their first trip, Geum Bok's mother disappears and Geum Bok is now all alone.

Tateoka Ema is an interrogation specialist who uses behavioural psychology to make suspects confess and boasts a 100% success rate. She can see through the lies of suspects in a split second by reading their “micro-gestures”. Any suspect whom she targets will eventually be forced to make a confession.

Six years ago in New York, Wisawade fell in love with a woman named Arusa. He had hoped to marry her and spend the rest of his life with her. However his happiness shattered when he found that Arusa had forged his signature on a check worth 3 million dollars to give to another man. The hatred and revenged he had towards Arusa caused him to become a cold blooded businessman. He never met Arusa again...Until his brother wanted to marry her.

The story is set in Republican Shanghai. Four young people with completely different experiences in life come together to break into the underground world of “Qianmen Jianghu” and solve mysterious cases. Su Zi Quan (Ning Huan Yu) is quick-witted and calls himself the “number one master sleuth on earth”. Despite his excellent memory, he can’t recall his early childhood. His biggest weakness, however, is that he’s allergic to women. Whenever he comes into physical contact with a woman, he has to sneeze. Tang Dai Yun (Shirley Jin) is a pure and kind-hearted, but also willful rich young lady. While looking for her lost older brother, she meets Zi Quan. Joining these two is the cold butler of the Tang household Chen Yi Ming (Li Dai Kun) who has great fighting skills and is only gentle to Dai Yun, and Zi Quan’s childhood friend Lu Zi Xiao (Zhu Ya), the only woman he’s not allergic to.

Natsuki Morishita (Shokichi) suddenly lost his parents when he was young. After that, he lived at his relative’s home, but he wasn't happy living there and he ran away. Natsuki then lived on the streets of the big city. Through a lot of struggles, Natsuki is finally able to open a small store. His childhood friend Wataru Okajima (Naoto) then appears in front of him. Natsuki Morishita and Wataru Okajima get swept up by friendship, betrayal and desires.

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It tells the legendary story of the three generations of the Liu and Yang families' century-old oil companies. From the 1920's Republican era to the Sino-Japanese War, they struggled in an environment where unscrupulous merchants colluded with officials, warlords, Japanese spies, and bandits. Since the ancient times, Hongjiang has long been an important and prosperous commercial port for Xiangxi. It is rich in high-quality tung oil that's known as Hong You. Liu Yun Xiang of Yuanlong Oil and Yang Tong Chang of Hengshun Oil used to be dutiful craftsmen abandoned by the great changes of the times. Yang Da Jiang, the eldest son of the Yang family, engages in activities for the Communist underground to raise funds for the revolution. The two daughters of the Liu family both fall in love with Yang Da Jiang and fight hard to secure Hongjiang City. Da Jiang's younger brother Yang Er Jiang joins the Kuomintang by accident. The members of the Liu and Yang families represent the sons and daughters of Xiangxi. The older generation of Liu Yun Xiang and Yang Tong Chang suffered many hardships without losing their morality. They traveled thousands of miles to do business while doing good for the world. Their children are full of enthusiasm and willing to make sacrifices as they compose a heroic song with blood.