Also, while Flesh Eaters as a specific noun can be capitalized, the way you’re using it here is just as an adjective, and it should really be “flesh-eating.”

What about “Samantha’s having vivid dreams of killing people. She comes from an ancient line of Cherokee Protectors who defend the world from Flesh Eating monsters. Her dreams lead her in helping to catch these monsters, until she finds herself entangled too deeply in her dreams. Her heart is torn – she is in love with another protector while being chased by a monster in love with her.”

That’s rough, and the term ‘monster’ doesn’t enhance it enough, but I hope it helps.