Saint Seiya: The Heaven Chapter - Overture

A CG anime to commemorate the 25th anniversary of the series and the 40th anniversary of its mangaka. From the dawn of time, there have been warriors who protected the Goddess Athena. Once forces of evil appear, these warriors, called the Saints will present themselves. A young woman, Saori Kido, learns about this force known as "Cosmos" and that she is the reincarnation of Athena, protector of love and peace on Earth. However, the Pope of the Sanctuary, who is in the charge of all the Saints, does not take kindly to Saori, and targets her for usurping the identity of Athena. An assassin is sent out to kill her. Fortunately, one of the Bronze Saints, Seiya, manages to protect her. But will Seiya be able to protect Saori through to the end in the gripping saga of Saint Seiya: Legend of Sanctuary?

Zeus had a daughter named Athena, the goddess of war. A group of youths flocked to Athena fighting to protect her amidst heroic battles as her "Saints". Their proof of being a Saint laid with the battle protector known as Sacred Cloth. After a virtual eternity, a new struggle is about to unfold now again over the Cloth. A boy named Seiya has crossed way over to Greece to undergo the training to become a Saint and obtained the Cloth, Bronze cloth, the lowest position among Saints. Every Saint takes a constellation as their tutelary god. And Seiya's guardian star is Pegasus. Now, the saints gather together from all over the world to participate in the "Galatic War" - championship of Saints, aiming at the Gold Cloth, the symbol of ruler of the Saints. The curtain for Galatic War has been cut open. During the death battle between the Saints, Phoenix, the Black Saint, suddenly appeared on the scene and runs off with Gold Cloth in front of a full house in his ambition to become ruler of the world. Seiya and his fellow bronze cloth warriors go after Phoenix and his "Shadow Army" to retrieve the lost Gold Cloth... The battles waged among the saints, the strongest young men on earth, begin now!

The god of war and guardian of his namesake planet, Mars, was once sealed away by Seiya, but time has passed and his revival is at hand. Meanwhile, Saori Kido (Athena) is raising the boy Kouga, whose life Seiya saved, and he's been training every day to become a Saint in order to prepare for the coming crisis... Unaware of his destiny, when Kouga awakens to the power of his Cosmo hidden inside him, the curtain will rise upon the legend of a new Saint.

Hades is planning to take over the world, to achieve that goal, he sends out deceased Gold Saints to take Athena's head. Seiya and the other Bronze Saints come to help but their help isn't appreciated by the remaining Gold Saints that are still alive.