Japanese Spiderman

Sees motorcycle racer Takuya Yamashiro gain the powers of Spider-Man. With his new powers and the help of Marveller, he transforms into Leopardon in order to defeat Professor Monster and his evil Iron Cross Army.

When a train suspiciously overturns, Takuya believes Professor Monster and the Iron Cross Army are responsible, while flashbacks reveal the tragic details surrounding Garia's arrival on Earth and the transfer of power to Takuya.

The Iron Cross Army abducts well-know burglar, Phantom Thief 001, in hopes of grooming him into another Spider-Man! Can the true web slinger stop the impostor before he wreaks havoc on the innocent?

Professor Monster works to create a program that can kill Spiderman, and the two men meet face to face for the first time!

Can Spider-Man stop the Iron Cross Army before they obliterate Japan with missiles?

The Iron Cross Army sets its sights on scientifically changing humans into super soldiers. One of their targets turns out to be Yosuke Matsuki, Tayuka's (Spiderman's) close friend. Can Spiderman stop the Iron Cross Army and protect his pal?