A powerful terrorist organization known as the Black Cross Army threatens to destroy the Earth, with only the defense organization EAGLE (EArth Guard LEague) able to oppose them. In retaliation, Black Cross Army destroys multiple EAGLE headquarters across Japan, killing all but five people. Now, these five remaining EAGLE members are called to form a secret, powerful team known as Gorenger, the only force left that has a chance to stop the Black Cross Army and their evil leader, Black Cross Führer.

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.

Gengobe Satsuma, an exiled samurai cast out as an Asano clan retainer, is given a second chance to join his brothers in arms to become the 48th Ronin against the Shogunate. His faithful servant gathers the 100 ryo required for his acceptance. Gengobe is also in love with a greedy geisha named Koman. About to be sold to another man, Gengobe learns that in order to keep her, her debt is exactly 100 ryo.

Tetsuaki's struggling to write a novel while his mother fades; Mitsuko's engagement has been forced upon her unwillingly; the two individuals run away to share their grief.

Takeshi Ijuin leaves for Chicago to be a cameraman, and a few years later returns to Japan. But he only learned the technique of homicide in Chicago. When he visits the graveyard with his father to pray at his mother's tomb, his father is shot by someone. Now he thirsts for revenge.

Oichi the Blind helps a woman escape the clutches of a high government official to go off with the man she loves. The official puts a reward on her head of fifty gold pieces and soon a menagerie of bounty hunters are after her skin. Three of them band together to accomplish this, one an expert swordsman, another a huge judo master and the third is deadly with a chain. To escape, she heads for the fishing town of Itso but soon comes face to face with Sankuro, the swordsman...

Chuji Kunisada returns to his home village to find that Jubei Matsui, the corrupt magistrate, has been responsible for virtually destroying Kunisada's family. A final tragedy leads Kunisada to join with a band of rogues living in the forest in robbing from the rich and giving to the poor, always with an eye toward avenging himself on Magistrate Matsui.