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Bioman head to Antarctica in order to save Professor Shibata and stop Doctor Man, while Silva makes a final push in order to reclaim his mecha Balzion from the mad scientist.
With both Silva and Balzion in Gear's hands, Bioman faces a relentless, hopeless assault until they gain the hope from an ally to keep going in order to defeat this threat.
Doctor Man uses all of his acquired knowledge and technology to perform a final attack on Bioman, unknowing of a familiar presence who decides one final time to try and save what remains of Gear's leader.
Many centuries ago, the android Peebo and the BioRobo came to Earth from the fallen Bio Star. The BioRobo showered five people with the Bio Particles, which would be passed on to later generations. In the present day, Doctor Man and his Shin Teikoku (New Empire) Gear threaten the world. Peebo must find the descendants of the original Bio Particle-showered five to form the Choudenshi (Super Electronic Squadron) Bioman.