A star tennis player takes revenge on the blackmailers out to ruin his athletic career.

Taiyo Sentai Sun Vulcan is the fifth season in Toei Company's Super Sentai tokusatsu television series. It was broadcast from February 7, 1981, to January 30, 1982, and is the only Super Sentai series to serve as a direct sequel to its previous series and the only all-male Super Sentai team. Its international English title as listed by Toei is simply Sun Vulcan. This was the last Sentai season to be co-produced with Marvel Comics.

Depicts the bloody siege of the fortress of Port Arthur, one of the most strongly fortified positions in the world, during the Russo-Japanese War of (1904 - 1905). In the story dominated the character Lt Takeshi Kogyo (Teruhiko Aoi), teachers, and a reserve officer who became commander of the platoon and later company. At the same time monitors the conduct of the army commander general Nogi (Tatsuya Nakadai), which was commissioned of the emperor Matsuhito (Toshirô Mifune) to the conquest of the fort.

Denzimen are warriors who fight against the Vader Clan, a clan that tries to pollute the Earth with sludge. Denzimen fight using the Super Science of the Denzi people. This was the first Super Sentai Series to introduce transforming robots.