The Semids are a peaceful people and staunch League friends and trade partners. When a group of interstellar terrorists detonates a nuclear bomb at the dedication of their Peace Spire the Semids call on the League for help tracking them down. Micah Stone and his team then embark on a journey of action, intrigue and interstellar trade to track down the ones responsible and bring them to justice. The strangeness of the cultures and the planets they encounter is almost as bad as the foes they seek and they must learn to adapt quickly or face death through sheer ignorance.