Kasumi married her former teacher, a university professor.One day, she is told by her husband that he will invite her students to her home to celebrate her graduation.Her invited students are jealous that her straight-laced professor has married Kasumi, who she admires, and threatens Kasumi with her past love affairs.Her distorted desire makes her squid with her toy while her husband is there, brings her companions and continues to play with Kasumi without caring even while her husband is sleeping.