Japan in the 1950s: in this imaginary version of history, martial law has been declared after the devastation of World War II and the streets are patrolled by the Wolf Brigade, a hard line Special Forces police brigade. Fuse, a member of this force, is traumatized when a young girl, a freedom fighter named Little Red Riding Hood, blows herself up in front of him. Later, he visits her grave and meets her sister, with whom he strikes up a cautious friendship.