WU Ying-xiong, police officer in the Southern Precinct, has been honored as a hero in the Harbor City since he ceased the terrorists on a Boeing 777 airplane and kept the city safe. Alas, the peace is only temporary... Panic spreads the whole city for a series of bomb explosions happen within hours and also that really is just the start of a tightknit conspiracy. Facing the catastrophe, the two-men group of opposite characteristics is the sole hope. Nonetheless, when moral standards are upside down, what faith if they keep to retain the justice?