A lone mage named Siluca and a vagrant knight named Theo make an oath as master and retainer, with hopes of bringing reform to a land riddled with war and chaos.

Villar's Mage Leader, Margaret, is about to turn 25. Villar only employs female mages, and when they reach the age of 25, he has their contracts voided. A lavish party is thrown. All in attendance express their gratitude to Margaret, as well as their sorrow at having to bid her farewell. It is then that Villar takes her hand and asks her to dance. Siluca looks on with growing frustration as they dance passionately, almost flaunting their mutual feelings for each other.

In order to distinguish himself as being fit to lead the Altirk Treaty, Theo and the others head to Sistina. To save the citizens of Sistina from the Rossini family's oppression, they visit the towns of the domain, urging them to revolt, but the Rossinis' reign of terror is too deep-seated, and no one is willing to rise up.

As the Treaty armies gather around Castle Unicorn, Milza becomes very impatient. He tells his mage that even if Waldlind reinforcements show up, this would only endanger Lady Marrine. However, his mage tries to convince him otherwise that her presence will turn the tide. Will Milza listen to his mage?

With the Union now mobilizing in full force, it succeeds in getting revenge for the Le Couleurs. However, their next vicious opponent awaiting for them on the seas is Sea King Erik. Will the Union prevail, or get crushed by the Nord's fighting prowess?

After the Mage Academy declares war, the Pope brands Theo as a heretic, and declares a Holy War against the Imperial Army. Now, innocent followers of the Order block Theo's path to Eramu.

The Vampire King enters the stage. As the Mage Academy leader stands watch over Pandora and the entire Age of Chaos, will Theo succeed and bring the Age of Cosmos?