Motorcycle racer Takuya Yamashiro witnesses a UFO fall to Earth, a space warship called the Marveller.

The incident attracts the attention of Professor Monster and the evil Iron Cross Army (鉄十字団, Tetsu Jūji Dan), an alien group that seeks to rule the universe.

He also gives him a bracelet that activates his spider protector costume, shoots web-lines, and controls the Marveller, which can also transform into the giant mecha Leopardon.

He has the ability to sense threats from the Iron Cross Army with his spider-senses and fights them in order to avenge the death of his father Hiroshi.

To hide his superhero identity, Takuya acts weak in front of his friends and is often made fun of for running away from danger and compared unfavorably to Spider-Man.

As well, his financial income as a motorcycle racer decreases after becoming Spider-Man because he has less time to race, forcing him to help Hitomi with her job to make money.

He is genetically altered as a result of the Spider-Extract that Garia injected into his body, giving him enhanced physical strength and spider-like abilities, such as being able to stick to and climb up walls and sense the activities of nearby enemies with his Spider-Senses.

Only Juzo Mamiya and the staff of the Interpol Secret Intelligence Division know of his true identity, beginning with the movie and episode 11, and aid him in stopping the schemes of the Iron Cross Army.

When Spider-Man confronts an enemy, he introduces himself while striking a pose and a version of the show's theme song plays as he begins to fight.

Due to budget issues, he rarely uses his web shooter to swing between buildings, instead using a car called the Spider Machine GP-7 and the Marveller for transportation.

[citation needed] Due to structural problems, the Leopardon suit was difficult for the stuntman to move in and, over the course of the series, was damaged and later lost.

The show was the result of a three-year licensing agreement when publisher Gene Pelc visited Japan on the behalf of Marvel that allowed both to use each other's properties in any way they wanted.

Toei initially planned to use Spider-Man as a supporting character for an unmade television series starring a fictionalized version of Yamato Takeru who was sent to the present via a time warp.

[5] Other productions by Toei as a result of this licensing deal included Battle Fever J (a show originally conceived about a Japanese counterpart of Captain America)[6] and an animated television film based on the comic book Tomb of Dracula.

A toy version of Leopardon, Spider-Man's robot from the Toei series, was also sold in the United States as part of the Godaikin line.

The action figure version of Leopardon was initially sold as a part of the Chogokin toyline and became an unprecedented success in the market, which contributed to the TV series' popularity as well.

The Region 2 DVD box set was released on December 9, 2005, and includes all 41 episodes and the movie on seven discs, as well as a 148-page booklet which features every publicity still of Spider-Man shot for the series.