Plot
Mark Williams, an old master thief, that Lupin teamed up in the past. After Mark past away, he left a dying wish for Lupin. In order to obtain the Trick Diamond, Lupin must return 6 of Mark's stolen valuables to their original spots. Only then will Lupin be able to learn the location of the Trick Diamond.
Where to watch Lupin the Third: Operation: Return the Treasure?
Lupin the Third: Operation: Return the Treasure is an action movie featuring Gorō Naya.
Lupin the Third: Operation: Return the Treasure is currently streaming for free (ad-supported) on Tubi TV.
It is also possible to buy Lupin the Third: Operation: Return the Treasure on Amazon Video.