A group of students from the Cosmo Academy are about to take their final exam: surviving for over fifty days in a derelict ship. But when they arrive, they discover that instead of ten students, there are eleven. One of them doesn't belong there...

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.