Three computer-savvy kids, Naoto, Yuka and Ippei created their own videogame superhero, but then discover it possessed by an inter-dimensional police officer, Gridman.
Kung Fu Shinobilar sends a signal to computer-controlled dog collars, causing dogs to act violently. The plan is to make the dogs attack humans. One of Yuka's friend's dogs is put in danger!
Jubagon invades a fortune-telling computer, and emits an "Obeying Beam" all over the town. Gridman is exposed to the beam, making him bow down to Khan Digifer, and sets off to fight God Zenon.
Kirara comes upon Takeshi's floppy disk containing Khan Digifer. Khan Digifer makes her create a monster, and Telebose is born. Telebose causes telephones to malfunction, creating havoc throughout the city.
Gyurunba invades a computer-controlled vacuum cleaner. It sucks up people who violate public morals. Gridman enters the vacuum cleaner to save the people who are trapped inside!
Takeshi's look alike, Takeo comes to town. Takeo hits it off with Naoto and his gang. Takeshi becomes jealous and plants Chidogelar into Takeo's microchip watch.
Khan Digifer brings Benkei from the past, as a bodyguard for Takeshi. Abumaru reprograms the computer, causing Benkei to act violently. Benkei must be sent back to his time, or history will change!
Takeshi becomes jealous of Yuka's kindness, and plants Goroma King into her hair dryer. Yuka uses the hair dryer and becomes a teenage delinquent with dyed hair!
A malfunction occurs in the control system of a shopping center. Yuka and her pregnant cousin, Akiho are trapped in an elevator. Akiho goes into labor from the shock of it all. Can Gridman save them and the baby?!
Khan Giorgio controls the police with the "Khan Digifer Constitution." The law is rewritten, with right and wrong being reversed. Soichiro is arrested for a clean driving record and sentenced to capital punishment!
Gridman prevents Skabone from carrying out Operation Odor. Khan Digifer becomes furious with Takeshi's continuous failure. He kicks Takeshi out and begins an indiscriminate attack by himself.
