Because of a fatal shooting case, plain-clothes Sergeant Ko Lik-kei runs into a “dull” and “troublesome” witness called Lee Ho-fan. Lik-kei is instructed to protect Ho-fan at all times. Initially, the duo are strangers that cannot stand each other. They then gradually get along. Meanwhile, an apparel company of which Ho-fan is a major shareholder is found to have involved in illicit dealings. Yip Cheung-lok and his son Yip Ming-kwan, who are member of senior management, are associated with these activities. Lik-kei teams up with Ho-fan and Ho-fan’s younger sister Lee Chung-ying, who is a barrister by profession, to investigate. Lik-kei and Chung-ying get entangled in a relationship in the process. Also, Lik-kei’s elder sister Ko Wing-yumand Ho-fan get along sometimes and provoke each other at other times. Fate has brought the foursome together, causing a case that has remained unsolved for more than twenty years to be reopened.

Blind barrister Man Sun-hop (Vincent Wong), aka Perception Man, has a superlative fourth sense. He teams up with female legal executive Chiu Ching-mui (Sisley Choi) and private investigator Kut Yat-ha (Owen Cheung) to seek justice for the underprivileged. They never hesitate to use tactics that involve “pushing the boundaries”. Barrister Shaw Mei-la (Kelly Cheung) earnestly approaches Sun-hop. They are then to fight it out in court. Also, Mei-la’s pupil master Kan Siu-wang (Paul Chun) constantly back Mei-la up. While Sun-hop was serving his pupillage with his pupil master Siu-wang, a homicide case involving some missing corpse had caused Shifu and his disciple to become foes. Sun-hop presents new evidence and lodges an appeal for the defendant. He and Siu-wang again confront each other, causing successive rounds of conflict. Meanwhile, the emergence of Mei-la brings about subtle changes in the formidable Sun-hop, Ching-mui and Yat-ha’s triangular relationship.

Fixers will use any means necessary to help the triads solve the most difficult problems. Karson Chung, a fixer for a Chinese-Australian triad, wishes to leave the triads and be together with his loved one but she dies in an accident. At the same time, he is framed for murdering a triad leader. He fakes his death to escape to Hong Kong, where he starts a new life as a high school gym teacher. Jovy Cheung, a new teacher at the school, is actually the daughter of a triad leader. Her father's retirement from the triads causes waves on both the lawful and unlawful sides and even affects the school community. Karson is forced to take up his identity as a fixer again to protect Jovy and the students. When Jovy's father is murdered, Jovy is forced to take over as a triad leader to bring control to the chaotic underworld. As Karson is in love with Jovy, he swears to help and protect her. Facing a new realignment in the good and bad spheres, who can set things right again?

Healthcare reform in Hong Kong is a controversial topic. The government plans to privatize public hospitals and raise funds to maintain operations. Marshall Paxton, a leading public hospital, has become a pilot for reform. This drama focuses on the everyday workings of medical professionals and the politics behind the healthcare industry in Hong Kong.

Since losing his eyesight in an accident, Man Sun-Hop has been continually harassed and despised. But instead, his determination and perseverance are so reinforced that he has qualified as a barrister. He has also developed an acute sense beyond sight which helps him to gain the status of Blind Legal Knight in the legal profession. However, nobody really knows his true character. Fortunately, Kuk Yat-Ha, his flatmate and private detective, and ChiuChing-Mui, female legal executive with mob connections, are two buddies he can always rely on. The trio are known as Three Sword Fighters who never submit to power and are always ready to seek justice for the underprivileged. Sun-Hop’s provocative style has aroused the fancy of female judge Wong Lai-Fan, who cannot control her amorous feelings for him. Expanded to a quartet, their fate encounters turbulent changes while handling challenging legal cases. Reappearance of Sun-Hop’s father and Tai Tin-Yan, fellow sister from college, further complicates the situation, which Sun-Hop may not be able to unravel with his legal mastery.