Ep. 30: Atom joins the Core Raider team to explore a vast underground cavern despite the captain's hostility.
The Core Raider, a subterranean exploration machine, is deployed to investigate a massive cavern, with Atom hastily assigned to support the system. Damon, the expedition captain, harbors strong antipathy toward the robot and insists on making all decisions himself, ignoring Atom's advice to navigate dangerous bedrock. After avoiding several crises, the team reaches a giant cave containing an unknown ecosystem. Alcard, the sponsor, discovers valuable Extra Crystals, causing his attitude to shift. However, the crystals possess a life of their own, forming a battle formation to surround the expedition members. Simultaneously, giant insect-like monsters attack the group, creating a perilous situation for the explorers trapped in this alien environment.
Episodes
- Ep. 26 · Atom is framed for planting a wormhole projector on the Minerva airship while Katari's team targets robots.
- Ep. 27 · Detective Higeoyaji and Atom investigate a locked-room mystery involving Skunk and the magnetic robot Gadem.
- Ep. 28 · Robots trapped in exploding plant while humans refuse rescue
- Ep. 29 · Uran and the Famous Detective / The Case of the Phantom Fowl
- Ep. 30 · Atom joins the Core Raider team to explore a vast underground cavern despite the captain's hostility.
- Ep. 31 · Goonon's Big Adventure / Gideon
- Ep. 32 · Blue Knight discovers his past as a repair bot while confronting Hamegg at the robot fighting ring.
- Ep. 33 · Friday and Atom assist Nina in a fairy hunt while her father faces Dr. Minimini's machine.
- Ep. 34 · Shape-Shifting Lifeform Moopie / Shape Shifter