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?

"Starlight" - it's a distant star, long ago, and in the far future. Two girls, who were struck by the light of the stage in this play, exchanged their destinies. "Two people's stars, waiting on stage." To burn out ordinary fun and joy and fulfill our destinies. A destiny to become a blast furnace at just 5 years old... what a danger. Eventually the two will meet again. One continued to stand on the stage of tragedy, the other jumped in, separated, jumped in, rewrote their destinies... and created a new chapter full of light. No girl was burned and fell from the tower, nor was she imprisoned. Then... what is the end of that new chapter? "Starlight" is a story of an unknown author. Where does the light come from and where does it go? And who is "starring" in this story? I want to see it. Hey -- Hanako Aishiro, a third-year student at Seisho Music Academy?

In the years following a vicious war, the Empire of Zol now controls the land and citizens of rival Aquafa—except for Aquafa's Fire Horse Territory, where wild dogs that once carried the deadly Black Wolf Fever continue to roam free. When a pack of dogs race through a Zol-controled mine, Van, an enslaved former soldier, and a young girl named Yuna are both bitten, but manage to escape as the sole survivors of the attack. Finally free, Van and Yuna seek out a simple, peaceful existence in the countryside. But as the deadly disease once again runs rampant, they find themselves at the crossroads of a struggle much larger than any one nation.

The cast is back and ready to quip! In this companion film that follows season 2 of the zany, irreverent Seitokai Yakuindomo anime series, the student council must again grapple with a mix of double-entendres and doubly potent teen hormones.