Masahiko Yamagata

In 1999, advanced science and technology enriched people's lives, but the damage caused when they were misused for crimes or went out of control and went out of control was also great. The Special Rescue Police Winspector (abbreviated as WSP) was established to deal with such a situation. Their purpose is not only to investigate crimes and arrest suspects but also to save the lives of those involved in crimes and disasters.

Denzimen are warriors who fight against the Vader Clan, a clan that tries to pollute the Earth with sludge. Denzimen fight using the Super Science of the Denzi people.

In 1966, five infant children were kidnapped by an alien group known as the Alien Hunters for the Reconstructive Experiment Empire Mess, who wanted samples of humans from Earth to experiment on. The children were rescued by Mess' arch enemy, the Flash alien race, which took each one to a different planet of the Flash solar system for training. Each child was trained separately in a range of superpowers that will allow them to fight Mess, their bodies also adapted to the atmosphere of the Flash Solar System making them gain special abilities. When they finally return to Earth in 1986 to combat Mess, who is now trying to invade it, they use the opportunity to search for their birth parents.

When a new threat from outer space called Galaxy King arrives on Earth seeking an equation for a new type of energy, Skyrider, and the other seven Kamen Riders join forces to fight off the new foe and the armies of Neo-Shocker.