At the beginning of the universe, it was formed by the two paths of Taiji, the two sides of Yin and Yang. In order to protect the two worlds of Yin and Yang, the legendary god of Yi Li (principles of change) transformed into two, each stationed in the two worlds, and passed on the Yi Li to their descendants. Every thousand years, each side of Yin and Yang produces an heir to Yi Li to maintain balance in the world. The Yin Demon King, in order to rule both worlds, begins to plan to annex the human world, merging Yin and Yang into one and incorporating it into his rule. A miracle descends from heaven, guiding Yi Budao, who has fallen into the human world, to travel through eight cosmic times and spaces in search of the eight members of the Yi Li family who are scattered…