Vandread: The Second Stage

After the events from the first stage, the female pirates and the men on board the "Nirvana" are heading towards Mejerr to tell them about "The Harvest". But in the way, aside from the new and faster enemies, they find Misty, an earthian girl that will teach to the crew more about their origins, and will give Dita and Hibiki more than an headache

Synopsis from Anime News Network