The legendary pirate king Blues has been killed by Madame Marciano, the boss of the galactic criminal guild. His bequest to his young daughter Franca is a whopping 10 billion space dollars. But actually getting it is the trick. Blues hid the fortune in a complex, custom-made vault somewhere on the planet Graceland. However, Graceland is now enduring such a violent civil war that the president of the Milky Way Federation is threatening to blow up the planet in a week. Mister, a notorious space pirate, his sidekicks Bishop and Katana, and his longtime rival Swamp must help Franca get to her inheritance before Madame Marciano or private detective Angelica Burns finds it first. With only seven days to achieve the seemingly impossible, and with Madame Marciano’s evil 12 SISTERs hot on the outlaws' trail, it’s anybody’s guess what will happen in this dynamic manga based on the popular anime series.