Set in the future, South and North Korea agree to set up a unified government. They have prepared for the unification for the past 7 years. Meanwhile, demonstrators, supporting and opposing the unification, become more fierce. A group against the unification commit terrorist acts. A special police force is formed in response.

Along With the Gods: The Last 49 Days follows the journey of 3 Afterlife Guardians and Su-hong as they journey through their 49th trial in order to gain their reincarnations and how the Guardians slowly recover their forgotten memories through Household God in the living world.