When a strange UFO lands on Earth, young motorcycle racer Takuya Yamashiro hears a voice calling to him. However, when he arrives to the spaceship known as the Marveller, he finds his father dead. He meets Gaira after being attacked by foot soldiers of the Iron Cross Army, led by the evil Professor Monster, and at death's door, the last surviving being from planet Spider saves young Takuya by injecting him with his own blood, which gives Takuya spider-like powers. Now Takuya become Spider-Man to fight against the Iron Cross Army and its selection of Machine Bem.
A Japanese adaptation of the wall-crawler, this show does do things differently, but it manages to keep some elements of the original Spidey in (like the death of a loved one). It also does things unique, like give Takuya/Spider-Man a spaceship that can turn into a giant robot called Leopardon to fight giant monsters (an addition that was soon put into Sentai, resulting in it becoming Super Sentai, as each team would have a giant robot).
It is a series that needs to be seen to believe, but this is not one for the younger fans of the webhead. As this show is from Japan, expect a lot more violence (people die from Iron Cross attacks in some episodes) and religious figures (the second episode has a scene in a church where Takuya looks at a statue of Jesus being crucified).