During 1930s Minguo in the nation's capital, opera performer Xiao Jun Sheng is arrested for the murders of five women at the peak of his career after a witness, Master Na, claimed to see him at one of the crime scenes. Jun Sheng is subsequently poisoned in jail with his death made to appear as a guilt-driven suicide, and his wife is forced to flee with their two young children. Eighteen years later, to carry out the final wish of their now departed mother, Ke Lan and Ming Xuan return to the capital to clear their father's name and uncover the truth. Ke Lan decides to enter the Na household as a servant while Ming Xuan joins the police force.

The story follows a team of investigators from the Organized Crime and Triad Bureau (OCTB) unit of the Royal Hong Kong Police Force.

Based on the popular novel by Jin Yong Kam Yung. He also wrote Legend of the Condor Heroes and Return of the Condor Heroes. The Heavenly Sword and Dragon Sabre takes place during 14th Century China during the Mongolian Yuan Dynasty, roughly 100 years after the events of Return of the Condor Heroes. After decades of struggles, famine, and bitterness which the Chinese citizens blamed on the Yuan Dynasty's misgovernment, the Martial Arts sects have begun to rebel. Prince Ruyong asks Cheng Kun, a Shaolin monk with an ulterior motive, for a plan on how to deal with the rebels. "The wielder of Heavenly Sword and/or Dragon Sabre rules the world." This well known legend in the Martial Arts community is the impetus for the tale of Zhang Wuji. The story begins with how his parents met (episodes 1-3), then tells his trials as an adolescent (episodes 4-8), proceeds to relate his rise to prominence (episodes 9-23) and reveals the secret behind Heavenly Sword and Dragon Sabre (episode 23), and ends with the confluence of Wuji's love life, the Martial Arts sects' long standing grudges, and cruel fate.

Jai Bao Yu is a male heir who grew up in a wealthy feudal clan dominated by women. His love affairs with his cousins Lin Dai Yu and Xue Bao Chai happened in the midst of his family's struggle to remain influential.

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Hailing from a lower middle-class family, Umeed is a young and innocent girl who shares a strong and loving bond with her mother, Zainab. Things come crashing down for the family when Saleem (Umeed's father) falls into the trap of stereotyping his own family due to financial hardships. With her marriage at stake and a daughter to take care of, Zainab stands up for herself and struggles to ward off the stigma around divorce. However, society's cruel remarks hold her back. The story follows struggle of Zainab and her daughter, Umeed as they face hardships in their lives.

Detective Tachibana is known as Meshibana inside the POLICE department due to his dedicated love for food, he solves every case by engaging in conversations about food with the accused and other people. Muranaka (played by AKB48 member Kasai Tomomi) talks about various sweets at the near end of the episode, along with two other cute girls. Every episode is filled with different kinds of food and delicacies. -- Written by The Simple Boy