Stephanie, a veterinary intern, is suddenly transported into a novel and becomes the infamous Peacock Princess in a beastman world—awakening a mysterious system along the way. With her medical skills and kind heart, she heals the wounds of her beast mates and helps them reclaim their lives. As she rises from a useless princess to a powerful Tier-5 warrior, the men who once scorned her are filled with regret. Meanwhile, the beast mates she saved grow fiercely devoted, sparking a sweet yet chaotic rivalry for her heart.