Law Lik-Ah (Kevin Cheng) used to fight for personal fame and gain in the law field. After setting up a Legal Advice Centre with his cousin George Mike Jr. (Lam Chi Sin) and his good friend Ting Ka-Fu (Sam Lee) in Sham Shui Po, Lik-Ah changes his mind and realizes that law is not a privilege of the rich. By helping the grassroots to fight against injustice with unconventional tactics, Lik-Ah becomes the People's Hero of Sham Shui Po. Also working as a barrister, Wong Sz-Fu (Myolie Wu) used to admire Lik-Ah for his invincible performance in the field but she starts to look down upon him for he has been reduced to a ghetto lawyer. However, after a few court cases with him, the two start to appreciate and fall in love with each other. Trying to become one the elite practitioners in town, Sz-Fu seizes every chance to get close to the renowned barrister Tseung Pak-KeI (Shek Sau).