

Tsuda, an undercover investigator from Interpol's Intelligence Department stumbles across an Iron Cross Army training sessio and is captured and tortured. Meanwhile, Spiderman meets a young painter who seems to have recently lost both his Mother and Father. While investigating an anonymous tip, Spiderman finds Tsuda and saves him from the Iron Cross Army and finds out that this man is actually the young painter's father!
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?