In this world, there is a race that controls the human spirit. The way it manipulates others with the poison in its body is like a bee with a poisonous stinger. That's why they are called... "BEE". One day, Mitsuba suddenly became a BEE, and together with Sosuke Hibari, a lecturer who specializes in BEE research at university, he decided to do research to create a medicine that would return her to a human. However, for that research, Mitsuba needs to go into heat, and she has to expose herself in front of Sosuke...?