This episode serves as the start of the final arc, focusing on the dark truth behind the "Hell's Gate" incident and the brewing war between the Syndicate and the Evening Primrose (EPR).

Hei recalls finding his sister, , surrounded by death in South America.

Meanwhile, and the Syndicate initiate a plan to use a particle accelerator to eliminate all Contractors, leading to the Syndicate turning against Hei’s team. Key Revelations:

The episode delves into the past, specifically the day Heaven’s Gate vanished in South America five years prior.

In the anime series Darker Than Black: Kuro no Keiyakusha (Season 1), is titled "God is in His Heaven..." (Japanese: Kami wa Sabu no Naka ni... ). Episode 23: "God is in His Heaven..."

This season has 12 episodes . It does not have an episode 23.

These four special episodes bridge the gap between Season 1 and Season 2.