but Martians were first : they have conquered the Earth !
Thanks to their superior intelligence, Martians have created a machine capable of emptying human brains. Without any knowledge and means of communication, humans have to obey...
Luckily, some human beings get organized and resist to free the planet ! They have understood that by slowly learning things and cooperating, they can push aliens back.
Your mission is to help freeing the world ! So get involved and become one of the heroes !