The system of 18 – Nine Heavens and Nine Hells – separate the Mortal Realm from the Eternal. Failing to reach true immortality, an old man must go back to his birthplace in search of his only hope forward. During his journey, he saves a young boy named Liang from a nefarious poison and meets an ambitious girl named Xu Wei, who uses her talent and good looks to advance in a dangerous world.
With goals of immortality, revenge, and absolute knowledge, the three unlikely companions set off on a journey fraught with endless danger, excitement, and countless new experiences. As they face each of the challenges in the myriad worlds, the old man, Liang, and Xu Wei will team up to break through the shackles of the Mortal Realms and burst through to the Eternal, by crossing The Divide.