In the royal capital protected by the goddess of light, every generation must dedicate a "saint" to stabilize the royal power and the religious order. The real candidate for the saint, Yameng, disappeared many years ago, so the first heir, Bianli Weishi, was forced to dress as a woman, using the alias "Saint of Light Altea". The Humpty Lock on his chest always reminded him: he is both a prince and a sacrifice.
In the underground world, the cat thief Tsukiyomi Ikuto holds the relic Dumpty Key and shuttles between the eaves and dark alleys, followed by pink-haired warriors holding spears - no one knows that she is Yamu who escaped from the altar. On the day of the grand ceremony, the saint on the stage, the cat on the roof, and the pink-haired girl in the crowd briefly looked at each other, and their fates became entangled again. A confrontation between swordsmen broke into the palace at night, and a dangerous transaction about the reorganization of power quietly began.
Purpose: Helping each other