Nearly four years have past since Zach drew blade against the Shanzi Shimay and now the time has come for him to draw his sword once more. The Realm of Mares has fallen victim to invasion as three terrifying beasts of darkness, seek to destroy the world around them, as they await the inevitable arrival of their King. With dark times ahead, the numbers of the Watchers on Iris has grown, as Zach is joined by seven fellow students, all to eager to prove their worth. It's not long before the students are put to the test facing off against the Nein Navy and uncover a dark secret. The stage is set and the Battle for Mares is under-way.