LAW LIK AH (Kevin Cheng) makes a comeback after spending two years in prison. Working together with his wife WONG SEE FU (Myolie Wu), the couple become the 'Condor Heroes' of Sham Shui Po, continuing to help residents fight for justice. However, LAW and SEE FU's attitude and style when handling cases remains different and due to this, the couple quarrels frequently. As LAW's ex-wife GING LING LEI (Christine Kuo) suddenly returns from the US, LAW and SEE FU's relationship is put to the test. On the other hand, a businessman from the real estate industry was displeased by how they handled a building toppling case, which led to a disaster for LAW. Social worker TING KA FU (Sam Lee), MAI GOR CHI (Jazz Lam) and new police officer LEUNG BAO SING (Raymond Cho) also get affected. Can they all finally join forces and help vulnerable citizens fight for justice?