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.

As Gai investigates the murder of Toshiko he is attacked by the mind switching contractor, who wants his jacket back. Mao makes an attempt to steal the jacket and take off with it by switching bodies with a crow. He fails and must revert back to the cat body. Things don't look good for Mao when the contractor realizes who he is. Now Mao's life hangs in the balance, can hei get there in time to save him and kill the contractor?

A sunspot called the Great Dark Spot, that makes the sun look like an eye, is about to appear and the last time it appeared the gate in South America dissappeared. To make everything even more hectic a boy is going around setting off explosions in the city. But things continue to fall apart when November 11 returns and it becomes apparent that Hei and November 11 are looking for the the same girl, who is known as Amber to Hei and February to November 11. Will Hei be able to find her before November 11 does, or will November 11 be taken out before his search can begin?

Hei is sent to infiltrate a religious organization and kill the Prophet, Alma. He is aided by an insider, another Contractor by the name of Shihoko whom Huang appears to know. Amagiri and Alma appear to be in cahoots with Alma providing him with dolls. A well-meant mistake on Huang's part leads to Shihoko's capture.

In Japan, Suo begins honing her combat skills under the watchful eyes of Hei and July. Meanwhile, Kirihara - still puzzled BK-201's disappearance - gets acquainted with the agents of Section 3.