After a long maternity leave, teacher Kurumi returns to school for the first time in a long time. Her husband, Daisaku, is also a teacher at the same school and supports her return to work. On the first day, as Kurumi finishes her classes and prepares to go home, Kawaguchi, who has been expelled from school, suddenly arrives. Kawaguchi holds a grudge against Daisaku for expelling him, and takes his anger out on Kurumi. He then kidnaps Kurumi with a junior colleague and records her humiliating appearance with overflowing breast milk on video. All for the sake of Daisaku...