Astronaut John Crichton has spent the last four years lost in a far distant region of the galaxy. He has experienced many fantastic adventures, confronted countless amazing alien species - but nothing he has encountered has prepared him for a galactic war between Scarrans and Peacekeepers that threatens millions of innocent lives. He must put himself directly at the centre of the conflict, and bring these two all-powerful, uncompromising combatants to peace. Somehow.