In the future world, earth-shaking changes have taken place in the underworld. The originally mysterious underworld blends with the real world, integrating many real historical events. Here, souls are experiencing a new journey of reincarnation, with all kinds of bizarre encounters and challenges. In this chaos and change, a group of messengers from the underworld are trying to explore the future direction of the underworld, trying to solve the mysteries hidden in the darkness, and all of this will lead the entire underworld into a new era.
