Lupine III is the grandson of the famous phantom thief Arséne Lupin. He is an elusive master thief who always steals his target prey. His brain is a genius, and his gun skills are top-notch, but his only flaw is that he has a weakness for cute girls. His companions are Daisuke Jigen, a gunfighter with a rapid fire rate of 0.3 seconds, Goemon Ishikawa, the 13th Samurai of the Showa era, and Fujiko Mine, a mysterious beauty. Together with these guys, who have their own quirks and quirks, they will once again receive a treasure in a spectacular manner, while trumpeting the seventh generation of Inspector Zenigata Heiji and his formidable enemies in the underworld.