Several monsters are missing. Yaone, a female warrior of Kogaiji, begins to investigate what is happening. Meanwhile, Sanzo and his three comrades find Tonpoo, an old friend of Sha Gojyo and Hakkai. Tonpoo tells the heroes he volunteered a militia called Fanron Troop, which consisted of humans tasked with hunting evil monsters. The same night, Yaone is captured by the captain of Fanron Troop when she sneaks into the camp.