"Vandread" is a science fiction manga series set in a future where humanity has colonized space, resulting in a stark division between the sexes. Men inhabit the planet Tarak, while women reside on the planet Mejere. The two societies are deeply antagonistic, with each viewing the other as inferior and dangerous. The story begins when Hibiki Tokai, a young mechanic from Tarak, accidentally stows away on a Mejere battleship during a skirmish. The ship, commanded by Dita Liebely, is attacked by a mysterious alien force known as the Harvesters, which threatens both planets.

During the battle, the Mejere ship merges with a Tarak battleship, creating a powerful new vessel called the Nirvana. This fusion symbolizes the potential for unity between the sexes, as the crew of the Nirvana is composed of both men and women. Hibiki, along with Dita and other key characters such as Meia Gisborn, Jura Basil Elden, and Barnette Orangello, must learn to work together despite their ingrained prejudices. The Nirvana becomes a symbol of hope and cooperation as the crew embarks on a journey to uncover the truth behind the Harvesters and their connection to humanity's past.

The narrative explores themes of gender dynamics, cooperation, and identity as the crew faces various challenges, including internal conflicts, external threats, and the mysteries of their own origins. The Harvesters, revealed to be ancient machines designed to harvest human DNA, pose a significant threat to both Tarak and Mejere. The crew discovers that their planets were once united but were artificially separated by a catastrophic event. As the story progresses, the characters develop deeper bonds and begin to question the societal norms that have kept them divided.

Key characters include Hibiki, whose initial brashness and reluctance to cooperate gradually give way to leadership and empathy; Dita, whose cheerful and determined personality contrasts with her insecurities; Meia, a disciplined and skilled pilot who struggles with her feelings for Hibiki; Jura, a confident and flirtatious woman who hides her vulnerabilities; and Barnette, a no-nonsense soldier with a strong sense of duty. Together, they navigate the complexities of their mission and their evolving relationships, ultimately working toward a common goal of survival and understanding.

The series combines action, humor, and drama, with a focus on character development and interpersonal dynamics. The overarching plot revolves around the crew's efforts to defeat the Harvesters and uncover the truth about their shared history, culminating in a climactic battle that tests their resolve and unity. "Vandread" presents a compelling exploration of gender roles and cooperation, set against the backdrop of a richly imagined science fiction universe.