In 2043 the Invid have dominated the Earth for 12 years now and their hold has shown no sign of weakening. Twice they have defeated fleets sent by Admiral Hunter leaving nothing but despair on the planet. Numerous freedom fighters have fallen to the rampaging hordes and with every victory their alien claws dig into what’s left of humanity deeper than before.

But something is coming, something that could change the fate of human and Invid alike…

All the plot and setting details can be found in the wiki here:
Info Dump

I hope you enjoy the campaign!