|This article is about a/an episode in Choudenshi Bioman.|
Using Shiro's animal informants, Bioman discovers a Gear plot to replace humans with exploding mecha-humans to sabotage a super-energy plant.
The episode begins with a Mechaclone disguised as a human scientist self-destructing and destroying the National Science Laboratory. With Shiro's help from a pigeon named Pedigrass, the Biomen go to investigate Techno Town. Shiro asks an officer for any suspicious activity, but the officer claims that Techno Town is a peaceful town. Pedigrass tells Shiro about the USP Zone, but gets killed by Mettzler of the Five Beastnoids. Mettzler prepares to kill him, but the rest of the Biomen save him. Mourning Pedigrass' death, Shiro investigates the USP Zone, when he is ambushed the officer, who is actually a Mechaclone in disguise. After destroying the Mechaclone, Shiro warns his teammates. The Mechaclones disguise themselves as Second National Science Laboratory workers and kill their real counterparts. Shiro sneaks in, but gets captured. Mason destroys the laboratory, but Shiro escapes and heads over to the Third National Science Laboratory with the rest of his team. Using their Bio-Brains, Green2 and Blue3 destroy the imposters, but Mettzler arrives. After defeating the Mechaclones, Mettzler turns invisible, but Green2 and Blue3 find him. The team unleashes the Bio Team Kick to defeat Mettzler, but the Beetle Canth arrives. Peebo launches the Bio Dragon and the Biomen enter to launch the Bio Jets. After destroying the Mechaclone ships, the Biojets combine to form the Bio Robo. After a brief fight, Bio Robo destroys Beetle Canth with the Comet Cutter and the episode ends.
- Shirou Gou: Ryōsuke Sakamoto (阪本 良介 Sakamoto Ryōsuke?)
- Shingo Takasugi: Naoto Ōta (太田 直人 Ōta Naoto?)
- Ryuuta Nanbara: Akito Ōsuga (大須賀 昭人 Ōsuga Akito?)
- Mika Koizumi: Yuki Yajima (矢島 由紀 Yajima Yuki?)
- Hikaru Katsuragi: Michiko Makino (牧野 美千子 Makino Michiko?)
- Doctor Man/Hideo Kageyama: Munemaru Kōda (幸田 宗丸 Kōda Munemaru?)
- Mason: Hirohisa Nakata (中田 博久 Nakata Hirohisa?)
- Farrah: Yōko Asuka (飛鳥 裕子 Asuka Yōko?)
- Monster: Strong Kongō (ストロング金剛 Sutorongu Kongō?)
- Mettzler: Hiroshi Izawa (伊沢 弘 Izawa Hiroshi?)
- Zyuoh: Masahiro Anzai (安西 正弘 Anzai Masahiro ?)
- Psygorn: Keisuke Yamashita (山下 啓介 Yamashita Keisuke?)
- Aquaiger: Hirotaka Nagai (永井 寛孝 Nagai Hirotaka?)
- Messer Beast: Shun Yashiro (八代 駿 Yashiro Shun?)
- Narrator: Ichirō Murakoshi (村越 伊知郎 Murakoshi Ichirō?)
Choudenshi Bioman Volume 1 features episodes 1-11.