Osirotené dospievajúce dievča sa prebudí v márnici a zistí, že má nové superschopnosti. Stáva sa z nej vyvolená nositeľka svätožiary tajnej sekty mníšok, ktoré lovia démonov.
V roku 43 podnikla Rímska ríša inváziu do dnešnej Veľkej Británie. Vydala sa do samotného keltského srdca, kde narazila na tajomnú zem plnú bojovníčok a druidov.
Mocha and her two companions are adventurers for hire. Unfortunately, their quest for wealth is hampered by their inability to finish a job. Just as they are going broke, Mocha contracts to steal a mystic dragon's head from the secluded temple of fire. When the trio finally escapes with the head, it speaks, offering a fortune for abandoning the contract and taking it to a different temple. Mocha readily agrees. They soon find themselves fighting their employer to prevent the end of the world.