Marika is a first year high school student living on a planet known as Uminoakeboshi. One day she finds out that her recently deceased father was once the captain of the space pirate ship called the "Bentenmaru". More importantly, the only one to inherit the captain's title has to be a direct descendant, meaning that Marika is next in line to become the captain of the ship.
Gene Starwind and his partner Jim Hawking run a small business on the backwater planet of Sentinel III. But all that changes the day that Hilda hires them for a bodyguard job. Now, thrust into a mystery they don't fully understand, they're on the run from the cops, the pirates, an angry alien, and a mysterious assassin. But they've got one thing going in their favor—they have the galaxy's most advanced ship, the Outlaw Star.