Atsuko went to Nansui Gakuen as a new teacher. Her looks and friendly personality quickly made her a popular teacher. Meanwhile, an incident occurs where a photo of her is posted on a bulletin board. Although the culprit is a mystery, the student's attention is naturally drawn to Murayama Kenji, an outcast in the class. Kenji says nothing, but Atsuko smiles at him and tries to dispel his doubts out of a sense of duty as a teacher, saying she is on his side. However, it doesn't take long for her smile to become wet with milk. Kenji is the son of the school principal. Unable to resist his authority, Atsuko sucks his cock with her innocent lips and licks it with her tongue. She is forced to swap her favorite suit with a revealing outfit and is forced to teach a class with a vibrator in her ass in front of his gaze. Atsuko endures the humiliation while thinking of her father and sister, but before she knows it, her body is beginning to crave his cock.

Atsuko is being fucked at Kenji's as usual house while Yui and Shinji are waiting for her return home. After getting out of the bath, Yui was shocked to see a picture of herself wearing only a bath towel on the table. Shinji is looking at the photo of Atsuko sucking on Kenji's cock with a troubled expression. He is nervous that his penis doesn't measure up. When Yui notices Shinji in a strange mood, she is stripped of her bath towel and made to sit in front of Shinji, who has a hard-on. Yui is unable to resist him and is devoured by Shinji. Not wanting Atsuko to worry about her, Yui endured the situation alone. Yui then faces Soichiro and his son Kenji. Atsuko has been missing for a few days. Yui has no choice but to surrender to Soichiro and his friends' demands to protect Atsuko. Finally, even her slutty ass was exposed to the light of day.

Atsuko-sensei is leaving the grocery when she sees Tomoe, one of her students. She is shocked by what she sees next. A store clerk, who had spotted Tomoe-chan shoplifting, grabbed her hand and took her to the back room. Atsuko was a bit nervous but hurried after them to protect her student. When she finally found the door to the back office, she peeked through the thinly opened gap and couldn't believe what she saw. Tomoe was on all fours while the clerk thrust into her. Atsuko stared at Tomoe with her skin exposed and covered in white, but when she came to her senses, she rushed inside to stop them. Atsuko tried to persuade him to stop what he was doing to Tomoe, but he threatened to take her to the police. Atsuko sacrificed herself for the sake of her student, kneeling before the shopkeeper.

Atsuko-sensei is sitting in front of a bed. In front of her eyes, a huge cock rises, almost touching her lips. The first thing that comes to her mind is the fact that she is a virgin. Atsuko-sensei can't get away from the cock that is pressing against her. However, it's not her first time seeing something like this. Meanwhile, Yui is wondering when her sister will get home. She doesn't know that her father is upstairs watching a video of Atsuko-sensei having sex. He suggests that the worried Yui go to school. Later, Yui is embarrassed at a cafe for no apparent reason. The waiter who unexpectedly talks to her is a black classmate, Johnson, who she doesn't like. Yui is called out for being racist, but the anger in her eyes never fades. Atsuko-sensei is resting at home, unaware of Yui's situation, when someone knocks on the door. She opens the door, and standing there is a boy who was invited to double-penetrate her, standing there sullenly.