As Li and Haraguchi continue to avoid Alan and the other Contractors, Haraguchi reveals that her actual name is Chiaki Shinoda. She also says she will give him the information she received from Rui. Upon retrieving the information Lee leaves Chiaki behind and takes of with the information. But everything is not as it seems. After getting a little ways away Li is attacked by Alan and the other Contractors. Can he survive?

Gai and Kiko get hired by a widow and are asked to find the widow's lost black cat. While trying to find the cat, they meet Hei, who is looking for the Contractor that is killing employers from that same company. As both Gai and Kiko continue to look, Gai comes across the skeleton of a woman who has been dead for a while.

Hei, Yin, and Mao are targeted by a group of contractors and now must fight to survive. Things become problematic when Yin goes missing. Now Hei and Moa must find her before the enemy does, but things change when Yin's old piano teacher gets Gai and Kiko to find Yin for him. The race is on to find Yin, but who will get to her first?

Eric Nishijima is using a particle accelerator to wipe out the contractors. Amber gathers numerous contractors to destroy the accelerator, and dolls to be used for some other unknown reason. Nijishima is related to the Syndicate as he places a phone call to eliminate Hei and his team. Amber sends a message to Hei via Wei, telling him to meet her in the Gate. Hei agrees and thus Huang, Mao, and Yin, agree to assist Hei to infiltrate Hell's Gate with Wei's guidance.

An Eurasian girl named Suou watches a meteor shower along with her twin brother Shion and their father, but things go awry when a meteor crashes into their location. Two years later, Shion has turned into a contractor from the incident, confined to a wheelchair due to his renumeration. He is locked away into the family home for safekeeping, while Dr. Pavlichenko spends his time researching into his son's condition and the contractors, forbidding Suou to talk or see her brother. Things go normally in their lives until Suou's best friend Tania becomes a contractor and attacks her boyfriend Nika when he stops her from leaving. Hei aka BK-201 reappears in Russia after a FSB squad tries to capture Shion alive; April also reappears in Russia on a mission to secure Shion.

Kiko and Kurasawa help Suo search for her mother. After a mysterious stranger points the young Contractor in the right direction, a long-awaited reunion leads to an unbelievable revelation.