"I'm done" was what Searing Moon said to Luna, before leaving the Lunar Republic, in hopes of having a better life. He heads to Equestria, only to find out that it has been ravaged by this war, and he knows the pony who could give him some answers. Only being there a day, his best friend and two others were murdered, and Moon goes to find the killer, and try to stop the war before it destroys civilization as he knows it.