Hong Kong no Mashu is based on the manga Lupin the 3rd and is built like an episode in the series, assuming the player's familiarity with the characters. The central character is the grandson of the fictional "gentleman thief" Arsène Lupin, who follows the same profession, traveling in search of riches and adventure with his companion Daisuke Jigen, an expert marksman. Joining them in this episode is Goemon Ishikawa XIII, a descendant of the legendary Japanese swordsman. Finding themselves in Hong Kong for different reasons, the heroes encounter an evasive and mysterious character with a dark past who crosses their paths and forces them to take action.

[From Moby Games]