Seasons & episodes
S1 · E1Commencement 2014-04-11 · 24 min
In isolation his entire life, Nagate must adjust to life in a centuries-old space colony while training as a cadet pilot to fight an ancient threat.
S1 · E2Oblivion 2014-04-18 · 24 min
Nagate is haunted by his first combat experience against the Gauna. Later, he meets the elite pilots of Sidonia.
S1 · E3Glory 2014-04-25 · 24 min
Exploring Sidonia, Nagate makes an enemy of Kunato while protecting a friend. The Gauna attack, calling the pilots into action.
S1 · E4Sacrifices 2014-05-02 · 24 min
After a disaster aboard Sidonia, Nagate and his team are ordered to retrieve a valued weapon. He later defies orders to save a friend.
S1 · E5Adrift 2014-05-09 · 24 min
Nagate and Shizuka, adrift in space, slowly run out of supplies as they await rescue from a departing Sidonia, which is too far away to send help.
S1 · E6Salutations 2014-05-16 · 24 min
Nagate and his squad graduate as pilots and are quickly sent into combat when the enemy returns; Kunato explores Nagate's history.
S1 · E7Resolve 2014-05-23 · 24 min
The enemy is revealed to be even larger and deadlier than previously believed, resulting in three squads engaging in a deadly fight.
S1 · E8Immortality 2014-05-30 · 24 min
Nagate is blamed for a defeat and harbors guilt over a casualty; the early years of Sidonia are revealed.
S1 · E9Empathy 2014-06-06 · 24 min
The Gauna find a distressing way to demoralize and out-fight the attack force. Nagate returns to Sidonia with a prize that may help in the fight.
S1 · E10Decisions 2014-06-13 · 24 min
Pacifists endanger themselves by leaving the relative safety of Sidonia, while the enemy shows up larger and fiercer than before.
S1 · E11Collision 2014-06-20 · 24 min
A large strike force encounters an enemy unit that takes them by surprise; Nagate does what he can to protect his friends.
S1 · E12Home 2014-06-27 · 24 min
Nagate fights one-on-one with the heart of his enemy while the strike force does not fare well in its attack on the Gauna.
S2 · E1Conflict 2015-04-11 · 24 min
Pilot Nagate Tanikaze is now renowned for his actions in the recent battle, but Nagate is more concerned with the disappearance of the ena Hoshijiro.
S2 · E2Ability 2015-04-18 · 24 min
Nagate and his team fight a hard battle against Gauna 549, aided by the appearance of a new type of gauna calling itself Tsumugi Shiraui.
S2 · E3Course 2015-04-25 · 24 min
Having disposed of the opposition, Kobayashi sets Sidonia's course to the ninth planet in the nearby Lem System. All-out war now seems unavoidable.
S2 · E4Rage 2015-05-02 · 24 min
A new threat appears in the form of Gauna 550, which has ejected countless lesser gauna cores on an intercept trajectory with Sidonia.
S2 · E5Hope 2015-05-09 · 24 min
Despite being instrumental in their victory, Tsumugi is severely damaged defending Sidonia. Izana, also critically injured, makes a bold decision.
S2 · E6Engage 2015-05-16 · 24 min
Evicted from his dorm and with nowhere to go, Nagate asks to stay with Izana for a night; Tsumugi has an emotional crisis triggered by a close call.
S2 · E7Rumbling 2015-05-23 · 24 min
The Sidonia's new weapon test succeeds, but the crew realizes they can't shut it down; Yuhata sends the garde pilots to investigate the disturbance.
S2 · E8Reunion 2015-05-30 · 24 min
The pilots and Tsumugi repair damage to the Sidonia following the Gravitational Beam Emitter incident; Tsumugi is upset for causing a minor accident.
S2 · E9Mission 2015-06-06 · 24 min
Izana finds out her 'date' with Nagate was a setup and storms home. Soon after, she is called to be part of a team that will scout out Planet Nine.
S2 · E10Entry 2015-06-13 · 24 min
The reconnaissance team is attacked by the gauna; Izana and the squad leader manage to escape into the atmosphere of Planet Nine.
S2 · E11Encounter 2015-06-20 · 24 min
Izana and the recon squad leader are pursued by an enormous humanoid gauna. Meanwhile, Tsumugi faces off against the Crimson Hawk Moth.
S2 · E12Battle 2015-06-27 · 24 min
Nagate rescues Tsumugi but is overpowered by the Crimson Hawk Moth. The situation looks grim as swarms of gauna bear down on the survivors.