An orphan named Seiya struggles through a tough childhood, fighting to survive on the streets. When he discovers that his sister is mysteriously abducted, he unleashes powers he never knew he had. He soon learns that he is destined to protect the reincarnated goddess, who appears to be humanity's last hope. Caught in a battle between light and darkness, Seiya must confront his own fears and transform into the mighty knight, Knight of the Zodiac. Can he overcome his past and become the hero the world needs?