The Imperial City Dreams of Thieves, Part 1

"What's going on with this!?" For some reason, Lupin landed in Tokyo, the imperial capital of the early Shōwa era. There, Lupin is chased by Namikoshi, a police officer who looks like Zenigata and saved by the Black Lizard, a female thief who looks like Fujiko. They all called Lupin a "golden mask"... In a phantom world, what Lupin is supposed to steal?!!