A gigantic meteorite made out solid gold is found, which has been planted by Zenigata in his latest plan to catch Lupin, who, of course, has his eyes set on it. With his new invention that erases peoples memory for an instant he is able to steal the gold, but Zenigata is fired as a result. But Lupin soon realizes that the loot he stole is not solid gold, it is only a rock with a gold coating. Lupin wants to find out who tricked him and the inspector wants to find out whoever stole the gold.