Princess Henrieta faces a crisis as her fiancé Xavier's spiritual energy spirals out of control due to a stimulant called Frenzy Dust secretly administered to him. His impending beastification threatens to ruin Henrieta's reputation and position, as she is an F-rank and unable to calm him down, unlike the required S-rank female. Realizing the only solution is to acquire the legendary Soul Stabilizer potion from the costly Starfall Auction, Henrieta commits to spending ten million gold to save Xavier and secure her claim to the throne. Meanwhile, doubts arise about Lucienne's true intentions, leaving Henrieta uncertain who she can trust.