Episode 1
Commencement
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.
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TV series
Knights of Sidonia
2014TV-142 seasons7.7 / 10
An alien race called Gauna has destroyed Earth. leaving humanity struggling to survive aboard the spaceship Sidonia. Even though it’s been a century since the last encounter with the Gauna, military service is mandatory. For Nagate Tanikaze, whose grandfather secretly hid him in the forgotten bowels of Sidonia, it’s a strange new world as he’s forced to come to the surface. Yet his recruitment comes just in time, for the Gauna have suddenly reappeared.
Streaming, rental and purchase options
Where to watch in United States
Checked Jul 22, 2026
Knights of Sidonia is available to stream on Crunchyroll Premium (Via Amazon Prime) in United States. Use the direct links below to open the provider.
Synopsis
An alien race called Gauna has destroyed Earth. leaving humanity struggling to survive aboard the spaceship Sidonia. Even though it’s been a century since the last encounter with the Gauna, military service is mandatory. For Nagate Tanikaze, whose grandfather secretly hid him in the forgotten bowels of Sidonia, it’s a strange new world as he’s forced to come to the surface. Yet his recruitment comes just in time, for the Gauna have suddenly reappeared.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
Oblivion
Nagate is haunted by his first combat experience against the Gauna. Later, he meets the elite pilots of Sidonia.
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Episode 3
Glory
Exploring Sidonia, Nagate makes an enemy of Kunato while protecting a friend. The Gauna attack, calling the pilots into action.
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Episode 4
Sacrifices
After a disaster aboard Sidonia, Nagate and his team are ordered to retrieve a valued weapon. He later defies orders to save a friend.
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Episode 5
Adrift
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.
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Episode 6
Salutations
Nagate and his squad graduate as pilots and are quickly sent into combat when the enemy returns; Kunato explores Nagate's history.
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Episode 7
Resolve
The enemy is revealed to be even larger and deadlier than previously believed, resulting in three squads engaging in a deadly fight.
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Episode 8
Immortality
Nagate is blamed for a defeat and harbors guilt over a casualty; the early years of Sidonia are revealed.
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Episode 9
Empathy
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.
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Episode 10
Decisions
Pacifists endanger themselves by leaving the relative safety of Sidonia, while the enemy shows up larger and fiercer than before.
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Episode 11
Collision
A large strike force encounters an enemy unit that takes them by surprise; Nagate does what he can to protect his friends.
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Episode 12
Home
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.
Where to watch Knights of SidoniaEpisode information updated Jul 22, 2026
More about Knights of Sidonia
Cast
Ryota OsakaNagate Tanikaze (voice)
Aki ToyosakiIzana Shinatose (voice)
Tomohiro TsuboiIchirou Seii (voice)
Hisako KanemotoYuhata Midorikawa (voice)
Satomi AraiLala Hiyama (voice)
Eri KitamuraHonoka Clones (voice)
Atsuko TanakaIttan Samari (voice)
Kohsuke ToriumiKouichi Tsuruuchi (voice)Credits
- Written by
- Sadayuki Murai, Shigeru Murakoshi, Tetsuya Yamada
Production details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 24
- Original language
- Japanese
- Original title
- シドニアの騎士
Networks & production
MBSJapan
TBSJapan
Polygon PicturesJapan
Themes
alienanimebased on mangamechamilitarypiloted robotpost-apocalyptic futurespace
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