After the Saints' victory against Hades, Seiya is left wounded and motionless in a wheel chair with no possible chance of recovery. Athena's sister Artemis, the Virgin Goddess of the Moon and twin sister of Apollo, makes an elaborate proposal - to restore Seiya's physical health in exchange for the supremacy of Sanctuary. Athena accepts and Artemis and her "Knights of the Sky" swiftly take control of Sanctuary. Now Seiya and his fellow Bronze Saints combat the forces of Zeus to regain their homeland but it will not be so easy. Bronze Saints Hydra Ichi and Unicorn Jabu, and Silver Saint Ophiuchus Shaina have join forces with Artemis and Apollo.

Based on chapters 11-13 of the original manga with additional content written by the manga author. The story will be told from Tenpou's point of view.

The story takes place in the land of Amber Ground, a place of perpetual night only partially illuminated by an artificial sun. Lag Seeing works as a "Letter Bee" (delivery boy) at the "Bee Hive" (a delivery service), with his Dingo, Niche, and her "pet," Steak, traveling with him. He is entrusted with the "hearts" of the everyone in Amber Ground to deliver their packages.

Palme is a puppet created by a man to care for his sickly wife. After her death Palme becomes paralyzed with sorrow, that is, until a woman being pursed happens to cross paths with Palme and his creator and ask them to deliver something precious to a sacred place called Tama. Palme, mistaking her for his masters late wife, accepts the request. This becomes his first step to becoming more human in order to understand his own feelings.