As sadomasochistic yakuza enforcer Kakihara searches for his missing boss he comes across Ichi, a repressed and psychotic killer who may be able to inflict levels of pain that Kakihara has only dreamed of achieving.

At a Hong Kong shopping center, Buck Yuen's (Jackie Chan's) intuition warns him. He saves a robbery's loot and gets on television, ends up in Istanbul via South Korea, and accidentally becomes a spy. Fortunately, he knows Kung Fu.