Watch Knights of Sidonia Online

Second season of .

Zeus had a daughter named Athena, the goddess of war. A group of youths flocked to Athena fighting to protect her amidst heroic battles as her "Saints". Their proof of being a Saint laid with the battle protector known as Sacred Cloth. After a virtual eternity, a new struggle is about to unfold now again over the Cloth. A boy named Seiya has crossed way over to Greece to undergo the training to become a Saint and obtained the Cloth, Bronze cloth, the lowest position among Saints. Every Saint takes a constellation as their tutelary god. And Seiya's guardian star is Pegasus. Now, the saints gather together from all over the world to participate in the "Galatic War" - championship of Saints, aiming at the Gold Cloth, the symbol of ruler of the Saints. The curtain for Galatic War has been cut open. During the death battle between the Saints, Phoenix, the Black Saint, suddenly appeared on the scene and runs off with Gold Cloth in front of a full house in his ambition to become ruler of the world. Seiya and his fellow bronze cloth warriors go after Phoenix and his "Shadow Army" to retrieve the lost Gold Cloth... The battles waged among the saints, the strongest young men on earth, begin now! (Source: Toei Animation)

Having narrowly avoided the collision with the asteroid, the Sidonia sets a course for the Lem system in order to wipe out the Gauna nest.

After destroying Earth many years ago, the alien race Gauna has been pursuing the remnants of humanity—which, having narrowly escaped, fled across the galaxy in a number of giant seed ships. In the year 3394, Nagate Tanikaze surfaces from his lifelong seclusion deep beneath the seed ship Sidonia in search of food on the upper levels, only to find himself dragged into events unfolding without his knowledge. When the Gauna begin their assault on Sidonia, it's up to Tanikaze—with the help of his fellow soldiers and friends Shizuka Hoshijiro, Izana Shinatose, and Yuhata Midorikawa—to defend humanity's last hope for survival, and defeat their alien foes. Sidonia no Kishi follows Tanikaze as he discovers the world that has been above him his entire life, and becomes the hero Sidonia needs. [Written by MAL Rewrite]

After the Earth was destroyed by mysterious alien lifeforms known as the Gauna, surviving remnants of the human race escaped to space in the enormous generation ship Sidonia. Having drifted through space for millennia, the Sidonia found itself once more under attack from Gauna for the first time in a century. Once again facing the threat of extinction, a temporary victory against the Gauna was eked out thanks to the human-Gauna hybrid Tsumugi Shiraui and ace Guardian mech pilot Nagate Tanikaze. 10 years later... The people of Sidonia enjoy a brief respite. Peaceful days pass, during which Tsumugi begins to realize her feelings for Nagate, who is now celebrated as a hero of Sidonia. However, as Captain Kobayashi has always known, as long as the Gauna remain, peace cannot last. The decision is made: a final battle, upon which rests the fate of humanity's last survivors. As the end approaches, will the crew be able to protect those they love?