The trouble started one day just before the end of the spring semester. The main character Hakura Tachibana an ordinary student majoring in natural sciences, she has a boyfriend Kazuya. You will also see her best friend Reiko Yoshinaga. Professor Shimazaki is very weird, he has a secret laboratory. No one has ever seen what’s inside. There are a lot of really weird and bizarre insectivorous plants out there. Professor Shimazaki will lead Hakura to his secret laboratory and the plants will be able to take advantage of her young body.