Marika learns about a mysterious ship has been hunting down the Space Pirates recently. Despite the threat they face by the "Pirate Hunter", Marika tells her crew they will still do one more job to renew their privateer license before her exams. At the same time, Marika and Space Yacht club prepare a final practice cruise for Lynn and the third years, who are due to graduate and leaving Marika as the next club president. Thanks to Show, the Bentenmaru is assign to escort the pirate ship Big Catch and it's fleet. Soon, the pirates are attacked by the Pirate Hunter, which is revealed to be a giant space ship which easily destroys the Big Catch fleet with it's superior weaponry and incredible maneuverability. As Marika orders the Bentenmaru to escape, another mysterious ship appears.