Kana and Takahara are colleagues. They both 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 Takahara's proposal. However, the next day, while preparing to go to teach, the vice principal unexpectedly called to inform her that she had to go on a business trip with him. Next month, the school is organizing a field trip for the students, and the vice principal and Takahara were assigned to scout the tourist location. But due to a sudden high fever, Takahara could not go, and he suggested to the vice principal to take Kana instead of him. With no other option, Kana had to go with the person she hated the most, the lecherous and vile principal who specializes in sexual harassment. Since the initial plan was for two males to go together, when they arrived at the inn, Kana found out that there was only one double room! Currently, there are no more vacant rooms, so Kana reluctantly had to share a room with the vice principal. As soon as they got back to the room, the vice principal began his plan to take over Kana. He threatens that her relationship with Takahara has been rumored throughout the school, and that they will have to break up and may even be fired. Not wanting to break up with her fiancé, Kana had to accept to use her body to "repay" him. Although it was forced at first, the principal's huge cock made Kana cum over and over again. She gradually became addicted to this cock, begging him to fuck her. And then she finally found out that the person who had planned to make her fall into his hands with the assistant principal was the person she trusted the most...