The reapers have returned from dark space. With Earth under attack and the mass relays in a state of chaos from refugees and the councils fleet engaging reaper forces the galaxy is a mess. The outcome is unknown, the warfare is devastating. The galaxy will never be the same.
With the detail and all the trimmings. I would like to thank Troodon80 for his deviant art references from which it would have been impossible to add this much detail.