Ep. 21: Conan and Monsley captured in Industria while Lana, Dyce, and Jimsy explore underground tunnels.
Aired on September 19, 1978

21
Conan and Monsley crash into Industria and are captured. Lana, Dyce, and Jimsy enter the underground tunnels, eventually finding the people who helped them escape last time. Monsley discovers that Lao has been captured. After Monsley sees Lepka's plan to torture Lao and flood the residential area of the underground, she turns traitor and helps Conan escape. While escaping, she gets shot.
Episodes
- Ep. 17 · Conan and Jimsy scout the ship while Orlo betrays the village to Industria
- Ep. 18 · Conan infiltrates the Gun Boat to rescue Lana after escaping the village.
- Ep. 19 · Lana warns of a tidal wave as Conan defeats Orlo to save everyone from the giant tsunami.
- Ep. 20 · Conan Returns to Industria with Monsley and Dyce
- Ep. 21 · Conan and Monsley captured in Industria while Lana, Dyce, and Jimsy explore underground tunnels.
- Ep. 22 · Conan and allies navigate a flooding town to rescue Lana and Mosley from Lepka's trap.
- Ep. 23 · Conan rescues Lana from Lepka at the Solar Tower before its activation.
- Ep. 24 · Lepka attempts to launch the Giganto war plane while Lana and Monsley escape to warn Conan.
- Ep. 25 · Conan defeats Lepka as the Giganto explodes and Industria sinks into the sea