When Masao gets a job, his father Ginji decides to remarry. Without knowing anything about it, he is introduced to his new wife, Misora, his private tutor from his high school days. Masao, who secretly has a crush on her, is unable to congratulate the couple on their marriage, saying, "I can't accept that Misora is my mother!" Every night, Masao comforts himself by fantasizing about Misora's lewd acts, but Misora is friendly to him. One day, Masao finally reaches his limit and releases his pent-up desires onto Misora's ripe body...
