The planet of Sera was once much like Earth. It had oceans, mountain chains, and numerous cities. Most of these landscapes were destroyed by the scorched earth tactic the C.O.G. used in an attempt to destroy the Locust, now, 90% of Sera has been transformed into a bombed out wasteland occupied by The Stranded or Locust soldiers. The only place that is even remotely intact is the Jacinto Plateau, the last vestige of the human survivors on the planet.