Ep. 24: Nezumi-Kozou Jirokichi IV proposes an alliance with Goemon to avenge their ancestors' past defeat.
Aired on March 20, 1978

The renowned thief Nezumi-Kozou Jirokichi IV confronts Goemon, revealing that their forebears once competed together in the inaugural International Thieves Championship. They were ultimately defeated by Arsène Lupin, the grandfather of Lupin III. Seeking redemption for their families' dishonor, Nezumi-Kozou suggests that he and Goemon form a partnership to challenge the Lupin clan. The narrative focuses on whether this new alliance can succeed where their ancestors failed, aiming to claim victory against the legendary thief. The story explores the potential clash between these two lineages as they vie for supremacy in the world of theft.
Episodes
- Ep. 20 · Lupin steals General Hatler's toupee while attempting to take his ruby medallion.
- Ep. 21 · Goemon Returns to Japan to Find His Master Dying and a Stolen Scroll
- Ep. 22 · Lupin and Jigen encounter a deceptive trap involving aging gas at a manor filled with women.
- Ep. 23 · A mysterious woman demands Lupin find Marshal Rommel's lost gold or face death.
- Ep. 24 · Nezumi-Kozou Jirokichi IV proposes an alliance with Goemon to avenge their ancestors' past defeat.
- Ep. 25 · Lupin's gang infiltrates an African prison to rescue Fujiko from the warden.
- Ep. 26 · Lupin and Jigen are tricked into targeting each other by Linda and Meyer.
- Ep. 27 · Lupin faces persistent Alice during heist for legendary Cinderella Shadow stamp
- Ep. 28 · Detective Melon and Zenigata Team Up to Pursue Lupin's Bank Heist Plan in Paris