Oh yes, after 4 months of waiting, they finally have the plot
Sometime in 2007, an event occurred that caused demons and other supernatural beings to appear on the surface world. The demons began to attack humanity, reducing the world's population down to less than 1 billion. The demons created an army, called the Geist, to continue to subdue the human population.[1]
In 2013, a young woman named Alicia enters an unnamed coastal eastern United States city, carrying a magical weapon shaped like a broomstick that can change weapon form as well as allow her to cast magic spells. A voice called the Darkness speaks to her, telling her that the city is doomed, but she strives on to save the humans from the Geist forces. She manages to make her way to a commander of the last of the human armed forces, who requests that she offer her powers to help save mankind. Alicia and the troops flee underground when one of the greater demons, Omega, appears and cannot be harmed by bullets or magic. When they make it back to their underground base, he gives her part of a journal, written by an archaeologist that appears to have lost a loved one in a plane crash in 2006, and traveled to a remote village to perform a sacrifice to return that person to life. From this, the humans have determined the cause of the demon infestations, as the archaeologists' self-sacrifice opened up the gateway for the demons. Alicia and the human troops take a cargo plane to the humans' base near this village, though the plane is attacked midflight by a huge flying demon that Alicia is able to stop, but not before it damages the plane's engines and they are forced to land a short distance from the headquarters.
After rescuing the surviving humans to headquarters and defending the base from Geist attacks from the air, Alicia is flown to the closest safe drop point near the village. She works her way through the heavily-defended area, finding the alter that lead the archaeologist to this point and finally, the man himself, still alive but impaled on the opening of the demonic gateway. He possesses the other half of the journal, which reveals that Alicia is his daughter, that she did die in the plane crash and was brought back from the grave by his sacrifice but that this gave her the magical powers she possesses, and that the only way to close the gateway is to kill him completely. After stating her love for her father, she kills him.
While the gateway is closed, the demons are still in control of the world, and with the human troops, Alicia returns to the city to face Omega, this time armed with knowledge that she needs both her magic and the support of the human troops to break Omega's shield and destroy him. After a prolonged battle, they finally manage to defeat Omega, freeing one city from the demons' run, but there's still many other demons that remain in the world.