In the violent city of Tokyo, Man and Beast battle for survival as the demonic Beasts strive to seduce and enslave every woman that crosses their paths. Born into a family of vampires, 19-year-old Mina has vowed to hunt-down and destroy all of the sex-starved Beasts. Together with her friends and her Beast-Hunter Sword, Mina must track-down a human-formed Beast that has infiltrated her college.