Sidonia no Kishi is a sci-fi anime series set in a future where humanity is on the brink of extinction due to an alien race known as the Gauna. The story follows Nagate Tanikaze, a young pilot who becomes a critical part of the battle to protect the last remnants of humanity aboard the spaceship Sidonia. The series is known for its blend of 3D animation and traditional storytelling, exploring themes of survival and identity.