Biosolar

In the year 2400, a war among the nations broke out over the globe. This wasn't really a global war though, this was an intergalactic war between planets. As fate would have it. An intergalactic race once known as the Mechon had invaded Earth. The Mechon were a fierce, highly advanced race that were both mechanical, and biological in nature. At first the Mechon seemed harmless enough, only after resources like iron, and other ores. All major governments of Earth where wary of this. They were also too afraid to attack the Mechon, as they were unsure of how dangerous they really were. However the Mechon did something unexpected... they left the planet... The Government were confused but relieved as the Mechon suddenly left... until they returned one year later with... malicious intents.