Ep. 3: Sidonia menuju Sistem Bintang Lem sementara Tsumugi menghadapi ancaman Gauna yang tersembunyi.
With the rest of the Immortal Assembly dead, Kobayashi announces that Sidonia will set course for the Lem Star System, pursuing the Gauna's mothership who threatens the colonists of planet Lem VII. Meanwhile, Yure remembers about Kunato's words, when he reveals that he created Tsumugi by impregnating Placental Shizuka with human DNA, unaware that it is seemingly pregnant again. Elsewhere, Yuhata discovers that Nagate is visiting Tsumugi and meets him and Izana just when they appear to meet her again and she ends becoming friends with her as well. Sometime later, just when Tsumugi is about to sort for a joint exercise, she glimses a large Gauna approaching Sidonia, which remained undetected by assimilating the colonists' ship and departs to attack it by herself. However, the Gauna create a massive structure to trap her and a platoon of 96 Guardian Pilots, including Nagate, depart to assist her. (Source: Wikipedia)
Episode
- Ep. 1 · Kunato dan Mozuki terjebak oleh parasit dan dipaksa mengendalikan orang lain sementara Nagate menghadapi kehilangan dan pertempuran.
- Ep. 2 · Tsumugi mengungkap sifat Chimera-nya setelah pertempuran sementara Kobayashi mengamankan data penelitian
- Ep. 3 · Sidonia menuju Sistem Bintang Lem sementara Tsumugi menghadapi ancaman Gauna yang tersembunyi.
- Ep. 4 · Tsumugi melindungi Sidonia dari sinar Gauna sementara Nagate menghancurkan inti utama.
- Ep. 5 · Izana dan Tsumugi menerima prostesis dan regenerasi sementara Sidonia tiba di Sistem Bintang Lem
- Ep. 6 · Nagate mencari tempat tinggal di dekat Tsumugi sementara pengujian Emittor Sinar Gravitasi berakhir dengan pertumbuhan tentakel yang tak terduga.
- Ep. 7 · Para Penjaga mengatasi kerusakan senjata sementara para pilot menghadapi uji armor baru dan pengungkapan pribadi.