This time, international policeman Chan Ka-kui (Jackie Chan) was commissioned by the CIA to investigate an international nuclear weapons trafficking group. At first, his boss and Ka-kui thought it was nonsense. They didn't believe that any organization could get nuclear weapons from the black market, and they thought they were investigating just a group of rabble. However, when Ka-kui followed the suspect Xu Jie to make a deal and accidentally discovered the nuclear bomb base in Ukraine, he realized the seriousness of the situation. The two parties in the transaction found Ka-kui, and he slipped and fell into the icy lake when he escaped. Fortunately, he was rescued by the Russian army and survived. After Ka-kui recovered, Russian Colonel Grieg sent him to Australia to track down Xu Jie's sister Anne (Chen Jun Wu). But as soon as Ka-kui arrived in Australia, he was hunted down by the local gangsters. Ka-kui felt that there was something fishy behind the incident.