第 9 集: Izana 替補逃兵並與新型 Gauna 交戰，Nagate 只能無助地在一旁觀望。
Nagate and Izana continue their visit when Yuhata and Tsumugi find a way to eavesdrop them. However, Izana discovers that Nagate was set up by her grandmother and gets angry at him, with Yuhata and Tsumugi returning home and spending the night awoke worried what happened between them. Meanwhile, Sidonia arrives at the Lem Star System and to secure a foothold on planet Lem IX, a reconnaissance party of four pilots using the Hayakaze is arranged, but when one of the selected ones desert and is arrested for treason, Izana is assigned as a replacement. Halfway through the mission, Izana detects an unknown object which is revealed of being a new type of Gauna and both Nagate and Tsumugi watch helplessly through the monitor as Izana and her team struggle against it. (Source: Wikipedia)
集數
- 第 5 集 · Izana 和 Tsumugi 接受義肢與再生治療，Sidonia 抵達 Lem Star System
- 第 6 集 · Nagate 在 Tsumugi 附近尋找住所，同時重力光束發射器測試以意外的觸手生長告終。
- 第 7 集 · 守護者們處理武器故障，同時駕駛員們面臨新裝甲測試與個人啟示。
- 第 8 集 · Nagate和Izana在Yuhata家中相遇，隨後Yure向Sasaki尋求關於發射器測試的協助。
- 第 9 集 · Izana 替補逃兵並與新型 Gauna 交戰，Nagate 只能無助地在一旁觀望。
- 第 10 集 · Izana的小隊與Gauna交戰，Nagate駕駛Tsugumori Kai Ni前往救援。
- 第 11 集 · Izana與隊友探索Lem IX地表，Nagate與Gauna交戰，Tsumugi對上Benisuzume
- 第 12 集 · Nagate在征服行星後返回Sidonia，而Kunato則觀察著一隻不完整的嵌合体。