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.
A covert counter-terrorist unit called Black Cell led by Gabriel Shear wants the money to help finance their war against international terrorism, but it's all locked away. Gabriel brings in convicted hacker Stanley Jobson to help him.
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.