A transgender woman by the name of Grenda Schneider finds herself, and her town, under attack by extradimensional demons with extraordinary powers. She must use a combination of martial arts, witchcraft, and a mysterious amulet given to her by her great-grandmother to beat back these invaders. However, the government also seems to be interested in Grenda and her amulet, and seems to be involved in a shadowy covert war with the demons as well, as Grenda finds herself in the middle.