Two innocent sisters, raised in a strict religious household, find themselves drawn into a dark, forbidden world of incestuous desire. In the confines of their shared room, they perform an ancient ritual, anointing each other with sacred oils and whispering ancient incantations. As they undress, their bodies are revealed to be marked with sacred symbols, a sign of their divine purpose. They come together, their bodies entwined, their lips locked in a passionate kiss. As they move, their bodies flush with heat, their breath coming in ragged gasps, they are consumed by a fire that neither can control. They are no longer sisters, but priestesses, bound together in a sacred, forbidden union.