In the distant future of outer space, aboard the seed ship Sidonia, humanity faces extinction by formidable alien life forms. Raised in the depths of the vessel, Nagate Tanikaze receives an unexpected inheritance from the ship's composed female leader after emerging into a world of advanced biology and unique genders. Illustrated with precision and wit, Knights of Sidonia, a beloved global sensation, weaves a tale of desperate survival amidst a backdrop of tragic heroism.