The film explores themes of mortality, morality, and redemption. The underworld setting serves as a metaphor for the afterlife, where souls are judged and sent to their final destination. The movie also touches on the concept of karma, where actions in life have consequences in the afterlife.

The character of Gang-rim represents a typical everyman, who is forced to confront his own mortality and the consequences of his actions. Through his journey, the film raises questions about the meaning of life and the importance of human relationships.

The Hindi dubbed version of "Along with the Gods: The Two Worlds" was released in 2017, allowing Indian audiences to experience the film. The dubbed version was well-received, with many praising the film's action sequences and emotional depth.

The story revolves around Gang-rim (played by Ha Jung-woo), a firefighter who dies saving a child from a burning building. After his death, Gang-rim is recruited by a team of underworld gods, led by Ja-in (played by Lee Jae-wook), to serve as a reaper for six months. The team's mission is to find the reason behind the sudden increase in "accidental" deaths.