Ogawa Akira is a student who has failed medical school entrance exams twice and is retaking it for a third time. His father is a doctor and his parents yearn for him to enter medical school. One day, he happens to encounter the beautiful hostess Kyoko. It is love at first sight for him. Because of this, he goes into the Ikebukuro nightclub where Kyoko is the top hostess, and starts working as a black-suited staff member. Inexperienced in the ways of the world and naive, Akira starts to learn about the harshness of living in the nightlife and begins to change.
One day, all of a sudden, Misaki, the number one hostess of a club in Roppongi becomes a high school teacher! Of all classes, she is appointed as the homeroom teacher for Class 2Z, a special class for the troublemakers at the school. But, with her positive power, she takes the students head-on, without ever giving up!
