H.K. Firm is a down-and-out law firm looked upon with scorn and derision by the law fraternity. Owner Homer Hong Dingwei (Lok Ying Kwan), a lawyer who had his license removed for offending the judge, has no choice but to recruit fresh law graduates to revamp the firm. Ben Lok (Raymond Lam) had been sacked by his previous employer because of his unconventional image and attitude. Saddled with his family’s financial burdens, Ben has no other choice but to work at H.K Firm. There, he meets three other young lawyers, all of whom are working for Homer for different reasons. Vincent Cheuk (Sammul Chan) refuses to be a small fry following a big lawyer around and so joins a small firm to fight his own cases independently. Zhong Qingling (Myolie Wu), ostrasized at the previous law firm for her passionate and righteous ways, decides to make her career in H.K. Firm instead. Jessica Chiang (Bernice Liu), she has followed her heart and Vincent into the firm. Through time and trial, all four become tight friends. Nevertheless, a complicated love rectangle, misunderstandings and ambitions threaten to break their bond…