Hero policeman Chan Ka-kui (Jackie Chan) is back. However, with his hot temper and outspoken personality, he quarreled with his boss this time because he was dissatisfied with his boss letting a very dangerous felon go, and resigned angrily. Ka-kui, who had left his police life, was traveling with his girlfriend when a telephone company was threatened with a bomb. Ka-kui, who was stubborn by nature, immediately rushed to the scene and started investigating the case. Unexpectedly, one wave of troubles arose. The bomb maniac actually blew up the door of the police station and kidnapped Ka-kui's girlfriend, demanding that Ka-kui bring a large amount of ransom to the warehouse to exchange hostages. When Ka-kui arrived at the warehouse with a huge amount of money, he found that it was already full of bombs...