The meeting between the thief Lupin and the gunslinger Jigen is not long in coming, but the latter is very disappointed by the attitude of the protagonist, intent only on thinking about the fair sex and definitely not willing to bring back the empire of which included his father and grandfather. Meanwhile, Inspector Zenigata begins to be obsessed with the thought of arresting Lupine III, but despite the continuous attempts, the defeat is the only result that the policeman manages to obtain (not counting his two comedic, who combine one behind the other and which are always the object of an outlet by a too often nervous Zazà). Meanwhile, Fujiko convinces Lupin to steal some precious jewels from an exhibition; but the woman (as expected) does not hesitate to resort to her famous double game by warning Zenigata of the intentions of the . In fact, the woman manages to take possession of the wealth by making only Jigen and Lupin pay the consequences of the theft, who however escape from the police.