Gun Down Under

Gunji Masudo, Tokyo's top detective is in Sydney, Australia, for an international police conference when his friend's son is kidnapped by the Yakuza. With the help from a local detective, he sets about trying to rescue the young man. A bloody conflict ensues.
The drama continues when Gunji's Australian friend and his family visit him later in Tokyo, where the head of the Yakuza seeks revenge for the loss of some of his own family and a showdown must reach its inevitable conclusion.