To Serve the King

Earthling mercenaries invaded and took over the planet Vista. They ruled it for years. The newest king, Edward was change things. His brother overthrows him. But Edward doesn't run. He helps overthrow King Ellis and returns to the rule of the planet to the locals. Edward becomes a king in name only. His brother and his young beautiful queen want the throne back. They hire a beautiful assassin to kill Edward. But he is a step ahead of his brother and has plans for the two young ladies.