Naoto detective Jiban fights for justice against Bioron and his evil plans to conquer the world.

Space Sheriff Shaider was a tokusatsu television show that aired on from 1984 to 1985. It is the last of the Space Sheriff Series, the previous two being Space Sheriff Gavan and Space Sheriff Sharivan. Action footage from Shaider was used for Season 2 of VR Troopers. For distribution purposes, Toei refers to this television series as Space Captain Sheider.

The U.N.G.C.C. (United Nations Godzilla Countermeasure Center) recovers the remains of Mecha-King Ghidorah and construct Mechagodzilla as a countermeasure against Godzilla. Meanwhile, a giant egg is discovered along with a new monster called Rodan. The egg is soon found to be none other than an infant Godzillasaurus.

Jiban goes into action to save Yoko and several captured children from Doctor Giba's plot of creating the ultimate lifeform.