It is the year 1999. The Machine Empire of Baranoia, led by Emperor Bacchus Wrath, has invaded Earth with the intention of wiping out all human life and bringing about machine rule. Chief Counselor Miura of the UAOH (United Airforce Overtech Hardware), in a desperate attempt to quell this invasion, has revived super energies born of the lost civilization of Pangaea. Enlisting an elite squad of the finest officers the UAOH has to offer, Miura has harnessed Tetrahedron Power, granting the team the power to transform into the Ohrangers… and save humanity from its darkest crisis yet!

Juukou B-Fighter is a 1995 Japanese tokusatsu television series. B-Fighter is short for "Beetle Fighter". It was part of Toei's ongoing Metal Hero Series. It dealt with three members of the prestigious Earth Academia fighting against the evil forces of the otherworldly Jamahl Empire. The action footage and props were later used for Big Bad Beetleborgs.