Su Fan dies in a car accident and wakes up as a ghost officer in the Underworld. While others reap one soul a day, he collects five at a time according to the Book of Life and Death, throwing the entire Underworld into chaos with his relentless work ethic. Immortal sects block his way, and the Hall of Reception fights over souls, but he follows only one underworld law: once your allotted lifespan is over, no one can escape. After being promoted to Lord of the Underworld, he leads twenty thousand ghost soldiers on an expedition across the Three Realms, only to discover that the name of a Monkey King is quietly turning red in the Book of Life and Death...