自分を許せず、自分の存在価値に揺れていた倫太郎。自分を信じて疑わない飛羽真、芽依の思いに応え、自分を信じる、諦めない心を取り戻した。そんな中、マスターロゴスが本気で動き出す。狙うはノーザンベースに眠る“力”。マスターロゴスが放った矢がノーザンベースの結界を破壊し、凌牙と玲花が飛羽真たちの前に現れる。時を同じくして、ズオスとストリウスもノーザンベースに侵入していた。２つの敵の侵入に対して戦える剣士は４人。飛羽真とユーリはデュランダルとサーベラ、そして尾上と倫太郎は、因縁の相手であるズオスに立ち向かうが――。
Rintaro has renewed his faith in himself after much conflicted doubt. Thanks to the unwavering trust of Touma and Mei, they continue to push on forward without giving up the fight. Meanwhile, Master Logos starts to make his move. His goal is to extract the secret power that resides within the Northern Base. An arrow shot by Master Logos destroys the barrier protecting the Northern Base as both Reika and Ryoga appear to confront the swordsmen. Plus, Zooous and Storious were also simultaneously invading the Northern Base as well. The four swordsmen within fend off the attacks from two opposing enemy factions. Touma and Yuri confront Durendal and Sabela, while Rintaro and Ryo face off against Zooous and Storious, two of them who still have a personal score to settle.
