A modern-day medical doctor past the usual age for marriage transmigrates and becomes a village girl who has been swallowed by a giant snake. From then on, she has both a human body and a snake body. Being ugly and unable to find a husband is no problem: she transforms, rescues a handsome prince, and tends to him so well that she accidentally ends up becoming his little princess. The villagers bully and oppress her at every turn. They summon a spirit medium to deal with her, so she calls up a horde of snakes to devour them, teaching them a lesson in no time. When her family suffers a terrible calamity, her mysterious origins come to light. If the world is so unjust, what's wrong with destroying it? With medical skills at her command, a divine beast by her side, and an army of cavalry joining her, she surveys the world at her leisure and beckons him with a finger. "Come here." The handsome prince asks nervously, "You won't transform tonight, will you?" She smiles seductively. "That depends on my mood!"
