Ep. 24: Lupin Gang Pursues Ancient Treasure While Goemon Faces Childhood Friend Seiryuu
Aired on January 12, 1985

Lupin and his crew seek treasure from an ancient Chinese dynasty belonging to Taniyama. Upon learning of the theft, Taniyama employs Seiryuu, a solitary assassin, to stop Goemon. Taniyama is aware that Seiryuu is Goemon's childhood friend. In exchange for assistance in locating the murderer of Seiryuu's clan, the assassin opposes Lupin's group. The narrative focuses on whether Goemon can defeat his former friend and if Seiryuu will uncover the identity of his clan's killer.
Episodes
- Ep. 20 · Lupin targets Mamushidayu, the disguised fraudster behind the Federation presidency.
- Ep. 21 · Lupin steals a dragon crystal eye to uncover a map to the Golden Paradise
- Ep. 22 · Lupin investigates a diamond vault fire and discovers a scheme to frame him for fake gems
- Ep. 23 · Lupin targets the world's safest mobile bank in Beirut for a daring heist
- Ep. 24 · Lupin Gang Pursues Ancient Treasure While Goemon Faces Childhood Friend Seiryuu
- Ep. 25 · Lupin's gang accepts a priest's request to retrieve the Dove's Eggs for Spoonland's children.
- Ep. 26 · Lupin Gang Targets Gold Pinball in New York While Goemon Encounters a Ghost
- Ep. 27 · Lupin pursues the sunken Star of Alaska ring amid Soviet, CIA, and KGB threats.
- Ep. 28 · The Star of Alaska Is A Ticket To Hell