This Is Why We Can't Have Nice Things

So after Denver was attacked by a force unknown to this world a group of misfits are then taken to a world they know all to well. They Knows whats coming'. They have to help. They'll fight to their last breath. This...This Is Why... (Currently Being Re-Writen. Fem!Shep/OC Ashley/OC Miranda/OC Kasumi/OC Jack/OC Tali/OC Etc. Etc. You Get The Point)