A tradition where women serve as the head of the family for generations. Like mantises, they only use men during fertilization and dispose of them afterward. Thus, a maddened matriarchal clan with sadistic lesbian tendencies amplified to the extreme: the Great Mantis family. The head of the family, Hana, and her beloved daughter, Mimi, live elegant lives with vast wealth. The next victim of the twisted lust passed down through their long lineage is Mimi's old friend, Miyuki, who grew up in an orphanage…
