Leah, a modern-day illustrator, accidentally falls into a world of beast-folk; no sooner has she arrived than she is dragged onto a sacrificial altar. Using her own blood as ink, she conjures a giant crimson-flamed wolf to rescue enslaved beast-folk, then joins forces with three companions to wage war against the Black Throne. Yet, the prophecy has already foretold the ending: the person closest to her is destined to pierce her heart with their own hands.