Grasshoppers are amongst the most ancient living groups of chewing herbivorous insects dating back to the early Triassic period around 250 million years ago. When they are forced to crowd together due to environmental changes, they will transform into locusts which swarm in the millions and destroy crops over wide areas.
In the 2400S, mankind begins to terraform the Planet Mars. Giant corporations, sponsored by the world government on earth, initiate huge projects to raise the temperature, the oxygen level and the ocean coverage until the environment is habitable.