While looking for a celestial book, Master Cui accidentally released a treasure-gathering toad. Fascinated by human pleasures, the toad reincarnated as Dou Zhanlong. To evade a heavenly tribulation, the toad divided its three souls and seven spirits within Dou Zhanlong's spiritual aperture, forming nine incarnations that appeared in nine separate locations. These nine Dou Zhanlongs, living in different parallel universes, each died once and were succeeded by another incarnation. Together, they suffered "nine deaths and thirteen calamities." Our story starts with the first Dou Zhanlong.