Takeshi Saitō is a 24-year-old security guard working for the Teikoku Sōsei conglomerate. One day he is transferred to a large theme park called "Fantasian" and owned by the company. There he becomes one of the guards donning a medieval knight's costume. At first he is excited to meet his co-workers, most of which are young attractive women. However, after …

A series of strange disappearances occurs in Zeroshiki Department Store, one of the largest shopping malls in Japan. The management is concerned and unwilling to involve the authorities. For an unknown reason they turn to one of their salesmen, a young man named Kuniharu Shitaku, requesting him to investigate the case and find out who or what is behind these …