"Saint Seiya: Evil Goddess Eris" is a 1987 anime film that serves as a standalone story within the broader "Saint Seiya" franchise. The narrative centers on the Bronze Saints—Seiya, Shiryu, Hyoga, Shun, and Ikki—as they confront the malevolent goddess Eris, who seeks to plunge the world into chaos and destruction. The story begins with the discovery of the Gold Cloth of Sagittarius, a powerful armor that holds immense significance for the Saints. However, the cloth is stolen by Eris's minions, who aim to use it to resurrect their goddess and grant her dominion over the Earth.

Eris, the goddess of discord, was once sealed away by the gods of Olympus due to her destructive nature. Her followers, the Ghost Saints, orchestrate her resurrection by gathering the energy of the Gold Cloth and using the life force of a young girl named Eri, who becomes a vessel for Eris's spirit. As Eris regains her power, she begins to spread chaos, turning humans against one another and threatening to engulf the world in eternal strife. The Bronze Saints must retrieve the Gold Cloth and stop Eris before her resurrection is complete.

The Saints face numerous challenges, including battles against the Ghost Saints, who wield dark powers and serve as formidable adversaries. Each Bronze Saint confronts their own personal struggles and tests of loyalty, courage, and strength as they fight to protect humanity. The climax of the story involves a dramatic confrontation with Eris herself, who, now fully resurrected, unleashes her full power in a bid to destroy the Saints and claim the Earth. The Saints must rely on their unity, determination, and the power of their constellations to overcome her.

Key characters include Seiya, the Pegasus Saint and de facto leader of the group, whose unwavering resolve drives the team forward; Shiryu, the Dragon Saint, known for his discipline and tactical prowess; Hyoga, the Cygnus Saint, whose calm demeanor masks a deep sense of justice; Shun, the Andromeda Saint, whose compassion contrasts with his hidden strength; and Ikki, the Phoenix Saint, whose rebellious nature and immense power make him a wildcard. Together, they embody the ideals of courage and sacrifice that define the Saints' mission to protect humanity from divine threats.

The film explores themes of heroism, the struggle against overwhelming odds, and the importance of unity in the face of adversity. It remains a notable entry in the "Saint Seiya" series, offering a self-contained story that captures the essence of the franchise while introducing a compelling antagonist in Eris.