Kana and Takahara are colleagues. They developed feelings for each other and yesterday Takahara proposed to Kana. Since she was a child, Kana has dreamed of having a small family, so she was extremely happy to receive the proposal from Takahara. However, the next day, while preparing to go to work, the principal unexpectedly called to inform her that she needed to go on a business trip with him. Next month, the school is organizing an outdoor trip for students, and the principal and Takahara are tasked with surveying the tourist location. But due to suddenly having a high fever, Takahara couldn't go, so he suggested to the principal to take Kana in his place. With no other choice, Kana had to go with the person she hated the most, the lecherous and despicable principal who specializes in sexually harassing her. The original plan was for two males to go together, so when they arrived at the inn, Kana only found one double room available! With no other vacant rooms, Kana reluctantly had to share the room with the principal. Upon returning to the room, the principal began his plan to take advantage of Kana. He threatened that the relationship between her and Takahara had been rumored by students throughout the school, they would have to break up and could even be fired. Not wanting to break up with her fiancé, Kana reluctantly agreed to use her body as a "reward" for him. Although initially forced, the principal's huge cock made Kana climax time after time. She gradually became addicted to this cock, begging him to fuck her. And finally, she discovered that the person who conspired with the principal to trap her was the one she trusted the most...