Heaven and Earth hold a celestial register known as the Azure Nether Register of Karma, which records all karmic ties and fated destinies of every being in the Three Realms. The Heavenly Dao uses it to determine fortune and calamity and judge the cycle of reincarnation. The young Chen Budao was originally an ordinary mortal passing through the world, but he unexpectedly became entangled in the register's vortex of karma. Ahead lie conflicts among immortal sects and the eerie mysteries of the underworld; behind him are grudges and tangled affections spanning several lifetimes. Every encounter is a foreshadowing of fate, and every tribulation has long been recorded in the karmic register. When his destined ending has already been written in stone, should he submit to Heaven's will, or wield the register to break through the deadlock and rewrite the world's karma?