Pandy and Retro awaken naked on Earth with no recollection of their past. They embark on a crime spree in search of food and clothing, but are captured by authorities and sent to the infamous lunar penitentiary named Dead Leaves.

7 years on from the original Fortress movie, Brennick and his family are still on the run. Finally, they give in, and surrender, only to find themselves imprisoned in a new, more sophisticated fortress prison in outer space. But Brennick's not a man to give in easily, and with a 10 year old son waiting for him back on earth, he's going to pack some serious assault on the evil corporation.

The International Space Station is now a prison - the ultimate black site. No one's getting out. And no one knows it's there. But when the imprisoned terrorists take over the Station and turn it into a missile aimed at Moscow, only a shuttle pilot and a rookie doctor can stop them. Their task is complicated by a rogue CIA agent (Scott Adkins) who has his own plans for the station and the terrorists within.