Zenigata uses a six-ton meteor made of gold to bait Lupin into a trap... but when it is revealed to be a gold-plated rock, both parties are in big trouble.
Lupin is on the trail of a mysterious ruby that bleeds every hundred years. As the said blood grants immortal life, he soon faces competition from other parties...
Fujiko sets up Lupin to take the fall for the abduction of Madam Fiona, only to find her to be wed to Fiona's son Roger. Lupin must clear his name and save Fujiko.
Fujiko convinces Lupin to make a theft by claiming to marry him, but when she double-crosses him she is caught by Zenigata... worse still, Lupin secures her release on the claim of a wedding.
Lupin, with Zenigata in hot pursuit, breaks into prison to ask an old friend to make a heist worth millions. The friend agrees, but is he to be trusted?
Lupin breaks into a vault of diamonds, but discovers they are fake and disposes of them. The owner informs Zenigata that Lupin destroyed the diamonds, leading to a vengeful showdown from Lupin.